#3988B9#3988B9

#3988B9 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 60.0% C 0.107 H 239.4°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#3988B9
RGB	rgb(57, 136, 185)
HSL	hsl(203, 53%, 47%)
HSV	hsv(203, 69%, 73%)
CMYK	cmyk(69.2%, 26.5%, 0%, 27.5%)
CIE-LAB	lab(54.00, -8.14, -32.69)
CIE-LCH	lch(54.00, 33.69, 256.02°)
OKLab	oklab(59.96% -0.0545 -0.0921)
OKLCH	oklch(59.96% 0.107 239.4)
XYZ	xyz(19.2451, 21.9789, 49.1176)
Luminance	0.2198 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988B9 #B96A39

analogous

#39B9AA #3988B9 #3948B9

triadic

#3988B9 #B93988 #88B939

tetradic

#3988B9 #AA39B9 #B96A39 #48B939

square

#3988B9 #AA39B9 #B96A39 #48B939

split-complementary

#3988B9 #B93948 #B9AA39

monochromatic

#1C435B #2B668A #3988B9 #61A4CE #90BFDD

Accessibility & contrast

On white

3.89

#3988B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#3988B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988B9

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988B9	#FFFFFF	#000000	##000000
##3988B9	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7188BB

Deuteranopia (green-blind)

#607CB8

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3988b9;
/* rgb */ color: rgb(57, 136, 185);
/* oklch */ color: oklch(60.0% 0.107 239.4);

Tailwind

colors: {
  custom: {
    50: '#7eaace',
    500: '#3988b9',
    950: '#000000',
  },
}

SCSS

$custom: #3988b9;
$custom-light: #7eaace;
$custom-dark: #000000;

JSON

{
  "hex": "#3988b9",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 185
  },
  "hsl": {
    "h": 202.969,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.5996,
    "c": 0.107,
    "h": 239.4
  },
  "luminance": 0.21981
}

Semantic roles & 50–950 ramp

primary

#3988B9

secondary

#C89F86

accent

#834BDC

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3988B9

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

Preview Lab → · Contrast checker → · Palette generator →