#3988B4#3988B4

#3988B4 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.7% C 0.102 H 236.5°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3988B4
RGB	rgb(57, 136, 180)
HSL	hsl(201, 52%, 46%)
HSV	hsv(201, 68%, 71%)
CMYK	cmyk(68.3%, 24.4%, 0%, 29.4%)
CIE-LAB	lab(53.78, -9.85, -30.17)
CIE-LCH	lch(53.78, 31.74, 251.93°)
OKLab	oklab(59.71% -0.0562 -0.0848)
OKLCH	oklch(59.71% 0.102 236.5)
XYZ	xyz(18.7265, 21.7714, 46.3866)
Luminance	0.2177 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988B4 #B46539

analogous

#39B4A3 #3988B4 #394BB4

triadic

#3988B4 #B43988 #88B439

tetradic

#3988B4 #A339B4 #B46539 #4BB439

square

#3988B4 #A339B4 #B46539 #4BB439

split-complementary

#3988B4 #B4394B #B4A339

monochromatic

#1C4257 #2A6586 #3988B4 #5EA5CC #8DBFDB

Accessibility & contrast

On white

3.92

#3988B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#3988B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988B4

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988B4	#FFFFFF	#000000	##000000
##3988B4	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7387B6

Deuteranopia (green-blind)

#627BB3

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3988b4;
/* rgb */ color: rgb(57, 136, 180);
/* oklch */ color: oklch(59.7% 0.102 236.5);

Tailwind

colors: {
  custom: {
    50: '#7daaca',
    500: '#3988b4',
    950: '#000000',
  },
}

SCSS

$custom: #3988b4;
$custom-light: #7daaca;
$custom-dark: #000000;

JSON

{
  "hex": "#3988b4",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 180
  },
  "hsl": {
    "h": 201.463,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.59712,
    "c": 0.10174,
    "h": 236.5
  },
  "luminance": 0.21773
}

Semantic roles & 50–950 ramp

primary

#3988B4

secondary

#C59B83

accent

#804CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3988B4

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

Preview Lab → · Contrast checker → · Palette generator →