#3988CC#3988CC

#3988CC is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 61.0% C 0.129 H 247.8°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#3988CC
RGB	rgb(57, 136, 204)
HSL	hsl(208, 59%, 51%)
HSV	hsv(208, 72%, 80%)
CMYK	cmyk(72.1%, 33.3%, 0%, 20%)
CIE-LAB	lab(54.90, -1.50, -42.08)
CIE-LCH	lch(54.90, 42.11, 267.96°)
OKLab	oklab(60.96% -0.0486 -0.1194)
OKLCH	oklch(60.96% 0.129 247.8)
XYZ	xyz(21.3865, 22.8354, 60.3956)
Luminance	0.2284 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988CC #CC7D39

analogous

#39CCC6 #3988CC #393ECC

triadic

#3988CC #CC3988 #88CC39

tetradic

#3988CC #C639CC #CC7D39 #3ECC39

square

#3988CC #C639CC #CC7D39 #3ECC39

split-complementary

#3988CC #CC393E #CCC639

monochromatic

#1C486E #29689F #3988CC #6AA5D9 #9AC2E5

Accessibility & contrast

On white

3.77

#3988CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#3988CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988CC

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988CC	#FFFFFF	#000000	##000000
##3988CC	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698BCF

Deuteranopia (green-blind)

#547DCB

Tritanopia (blue-blind)

#0098A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3988cc;
/* rgb */ color: rgb(57, 136, 204);
/* oklch */ color: oklch(61.0% 0.129 247.8);

Tailwind

colors: {
  custom: {
    50: '#81aadc',
    500: '#3988cc',
    950: '#000000',
  },
}

SCSS

$custom: #3988cc;
$custom-light: #81aadc;
$custom-dark: #000000;

JSON

{
  "hex": "#3988cc",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 204
  },
  "hsl": {
    "h": 207.755,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.60964,
    "c": 0.12894,
    "h": 247.8
  },
  "luminance": 0.22838
}

Semantic roles & 50–950 ramp

primary

#3988CC

secondary

#D1AE90

accent

#8E46E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3988CC

Body copy rendered with the generated semantic roles for this colour.

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