greenneutralCSS named color

Mediumaquamarine #66CDAA

Mediumaquamarine is a medium, moderately saturated gray color with a neutral cast. Defined as one of the 148 CSS named colors in the W3C CSS Color Module Level 4 specification.

Use cases: Success states · Nature brands

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Families: Greens · Emerald Colors

Color values

FormatValue
HEX#66CDAA
RGBrgb(102, 205, 170)
HSLhsl(160, 51%, 60%)
HSVhsv(160, 50%, 80%)
OKLCHoklch(77.67% 0.11 168.8)
OKLaboklab(77.67% -0.1078 0.0213)
CMYKcmyk(50.2%, 0%, 17.1%, 19.6%)
XYZxyz(34.5633, 49.3867, 45.7336)
CIE-LABlab(75.7, -38.3, 8.3)
CIE-LCHlch(75.7, 39.2, 167.8°)
Luminance0.494 (WCAG relative)
/* Mediumaquamarine */ --mediumaquamarine: #66cdaa; color: #66cdaa; background-color: #66cdaa;

Source: W3C CSS named color. CSS keyword: mediumaquamarine.

Shade scale

Perceptual 50–950 scale, interpolated in CIE-LAB. Step 500 is the base color. Edit in the shade generator →

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OKLCH ramp (perceptually uniform, modern CSS)

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Shades (toward black)

#5cb697 #52a085 #498b74 #3f7663 #366152 #2d4e42 #243b32 #1b2923 #111815 #000000

Tints (toward white)

#78d2b2 #89d7bb #98ddc3 #a8e2cb #b7e7d4 #c5ecdc #d4f1e5 #e2f5ee #f1faf6 #ffffff

Tones (toward gray)

#71cbac #7bcaad #85c8af #8dc6b1 #96c5b2 #9ec3b4 #a5c1b6 #adbfb7 #b4bdb9 #bababa

Color harmonies

Complementary

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#66CDAA
#CD6689
#66cdaa #cd6689

Analogous

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#66CD77
#66CDAA
#66BCCD
#66cd77 #66cdaa #66bccd

Triadic

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#66CDAA
#AA66CD
#CDAA66
#66cdaa #aa66cd #cdaa66

Tetradic

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#66CDAA
#7766CD
#CD6689
#BCCD66
#66cdaa #7766cd #cd6689 #bccd66

Square

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#66CDAA
#7766CD
#CD6689
#BCCD66
#66cdaa #7766cd #cd6689 #bccd66

Split Complementary

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#66CDAA
#CD66BC
#CD7766
#66cdaa #cd66bc #cd7766

Monochromatic

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#2D8B6B
#3DB98F
#66CDAA
#94DCC4
#C2EBDD
#2d8b6b #3db98f #66cdaa #94dcc4 #c2ebdd

Accessibility & contrast

1.93
#66CDAA on #FFFFFF
AA text ✗AA large ✗AAA text ✗UI 3:1 ✗
10.88
#66CDAA on #000000
AA text ✓AA large ✓AAA text ✓UI 3:1 ✓

Best text on mediumaquamarine

10.88
#000000 text

WCAG 2.1: AA needs ≥4.5:1 for normal text, ≥3:1 for large text and UI components; AAA needs ≥7:1 / ≥4.5:1. Open the contrast checker →

Color blindness preview

Simulation using the Machado et al. (2009) physiological model, severity 1.0. This is an approximation of perception — not a medical assessment.

Normal vision
Protanopia (red-blind)
#C8C1A8
Deuteranopia (green-blind)
#B9B6AC
Tritanopia (blue-blind)
#3ECEC3

Closest named colors

Nearest matches by CIEDE2000 perceptual distance (ΔE₀₀) across the full color database.

ColorNameΔE₀₀
Seafoam Blue #78D1B63.02
Pale Teal #82CBB24.22
Eucalyptus #44D7A84.22
Seafoam #7FE0B35.45
Light Teal #90E4C16.55
Greenblue #23C48B7.01

Colors that go with mediumaquamarine

Top matches by hue harmony, contrast and saturation compatibility.

Evergreen #05472A
5.6:1
Same hue family as mediumaquamarine (Δh 6°) — guaranteed harmony
Hunter Green #355E3B
3.9:1
Analogous hue (Δh ≈31°) — neighbors on the color wheel
Mud Brown #60460F
4.6:1
Triadic harmony (Δh ≈119°) — balanced three-way contrast
Grape Purple #5D1451
6.5:1
Split-complementary angle (Δh ≈150°) — strong but softer than direct complement
Burgundy #800020
5.6:1
Complementary hue (Δh ≈175°) — maximum hue contrast

Values computed from the sRGB color model. CMYK is the naive sRGB conversion without an ICC profile. RGB percentages may differ between color-managed applications.