cyancoolCC0 survey name

Dark Turquoise #045C5A

Dark Turquoise is a dark, vivid cool color (#045C5A; HSL 179° 92% 19%). Name from the public-domain xkcd color survey (CC0), where it was contributed as “dark turquoise”.

Use cases: Fresh accents · Aquatic themes

Open in generator →

Families: Cyans · Teals

Color values

FormatValue
HEX#045C5A
RGBrgb(4, 92, 90)
HSLhsl(179, 92%, 19%)
HSVhsv(179, 96%, 36%)
OKLCHoklch(42.96% 0.073 192.2)
OKLaboklab(42.96% -0.0709 -0.0153)
CMYKcmyk(95.7%, 0%, 2.2%, 63.9%)
XYZxyz(5.7218, 8.4175, 10.9941)
CIE-LABlab(34.8, -23.2, -5.5)
CIE-LCHlch(34.8, 23.8, 193.3°)
Luminance0.084 (WCAG relative)
/* Dark Turquoise */ --dark-turquoise: #045c5a; color: #045c5a; background-color: #045c5a;

Source: xkcd color survey name (public domain, CC0).

Shade scale

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

50
100
200
300
400
500
600
700
800
900
950

OKLCH ramp (perceptually uniform, modern CSS)

50
100
200
300
400
500
600
700
800
900
950

Shades (toward black)

#0a5351 #0e4a48 #10413f #113837 #112f2e #102726 #0f1f1e #0c1717 #060e0e #000000

Tints (toward white)

#2b6b69 #457b78 #5c8a88 #739a98 #8aaba9 #a1bbb9 #b8ccca #cfdddc #e7eeed #ffffff

Tones (toward gray)

#175b59 #235a58 #2b5958 #335857 #395756 #3f5655 #445554 #495454 #4d5353 #525252

Color harmonies

Complementary

Edit in generator →
#045C5A
#5C0406
#045c5a #5c0406

Analogous

Edit in generator →
#045C2E
#045C5A
#04325C
#045c2e #045c5a #04325c

Triadic

Edit in generator →
#045C5A
#5A045C
#5C5A04
#045c5a #5a045c #5c5a04

Tetradic

Edit in generator →
#045C5A
#2E045C
#5C0406
#325C04
#045c5a #2e045c #5c0406 #325c04

Square

Edit in generator →
#045C5A
#2E045C
#5C0406
#325C04
#045c5a #2e045c #5c0406 #325c04

Split Complementary

Edit in generator →
#045C5A
#5C0432
#5C2E04
#045c5a #5c0432 #5c2e04

Monochromatic

Edit in generator →
#011D1D
#012121
#045C5A
#079793
#09D1CD
#011d1d #012121 #045c5a #079793 #09d1cd

Accessibility & contrast

7.83
#045C5A on #FFFFFF
AA text ✓AA large ✓AAA text ✓UI 3:1 ✓
2.68
#045C5A on #000000
AA text ✗AA large ✗AAA text ✗UI 3:1 ✗

Best text on dark turquoise

7.83
#FFFFFF 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)
#55575A
Deuteranopia (green-blind)
#4A4E5B
Tritanopia (blue-blind)
#005F5B

Closest named colors

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

ColorNameΔE₀₀
Deep Teal #00555A4.14
Dark Aqua #05696B4.73
Dark Teal #014D4E5.09
Petrol #005F6A6.25
Dark Aquamarine #0173717.77
Deep Turquoise #0173747.91

Colors that go with dark turquoise

Top matches by hue harmony, contrast and saturation compatibility.

Pale Blue #D0FEFE
7.2:1
Same hue family as dark turquoise (Δh 1°) — guaranteed harmony
Light Blue #95D0FC
4.7:1
Analogous hue (Δh ≈27°) — neighbors on the color wheel
Beige #F5F5DC
7.1:1
Triadic harmony (Δh ≈119°) — balanced three-way contrast
Warm Beige #E9DCC9
5.8:1
Split-complementary angle (Δh ≈143°) — strong but softer than direct complement
Soft Pink #FDB0C0
4.5:1
Complementary hue (Δh ≈169°) — 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.