#1F588E#1F588E

#1F588E is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.1% C 0.106 H 250.5°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX#1F588E
RGBrgb(31, 88, 142)
HSLhsl(209, 64%, 34%)
HSVhsv(209, 78%, 56%)
CMYKcmyk(78.2%, 38%, 0%, 44.3%)
CIE-LABlab(36.41, 1.45, -35.13)
CIE-LCHlch(36.41, 35.16, 272.36°)
OKLaboklab(45.15% -0.0355 -0.1001)
OKLCHoklch(45.15% 0.106 250.5)
XYZxyz(8.9354, 9.2227, 26.8952)
Luminance0.0922 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1F588E #8E551F
analogous
#1F8E8D #1F588E #1F218E
triadic
#1F588E #8E1F58 #588E1F
tetradic
#1F588E #8D1F8E #8E551F #218E1F
square
#1F588E #8D1F8E #8E551F #218E1F
split-complementary
#1F588E #8E1F21 #8E8D1F
monochromatic
#091A2A #14395C #1F588E #2A77C0 #4F96D9

Accessibility & contrast

On white

7.38
#1F588E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.84
#1F588E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F588E
7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1F588E#FFFFFF#000000##FFFFFF
##1F588E1.007.382.847.38
#FFFFFF7.381.0021.001.00
#0000002.8421.001.0021.00
##FFFFFF7.381.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3F5B90
Deuteranopia (green-blind)
#2E518D
Tritanopia (blue-blind)
#00656C
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #1f588e;
/* rgb */ color: rgb(31, 88, 142);
/* oklch */ color: oklch(45.1% 0.106 250.5);
Tailwind
colors: {
  custom: {
    50: '#6c86af',
    500: '#1f588e',
    950: '#000000',
  },
}
SCSS
$custom: #1f588e;
$custom-light: #6c86af;
$custom-dark: #000000;
JSON
{
  "hex": "#1f588e",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 142
  },
  "hsl": {
    "h": 209.189,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4515,
    "c": 0.10619,
    "h": 250.5
  },
  "luminance": 0.09224
}

Semantic roles & 50–950 ramp

primary
#1F588E
secondary
#BB834D
accent
#9241E7
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#080B10
muted
#7A7C7F

Preview Lab

Preview with #1F588E

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

Preview Lab → · Contrast checker → · Palette generator →

#1F588E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva