#1F5181#1F5181

#1F5181 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.6% C 0.096 H 250.4°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F5181
RGB	rgb(31, 81, 129)
HSL	hsl(209, 61%, 31%)
HSV	hsv(209, 76%, 51%)
CMYK	cmyk(76%, 37.2%, 0%, 49.4%)
CIE-LAB	lab(33.48, 0.89, -31.82)
CIE-LCH	lch(33.48, 31.83, 271.60°)
OKLab	oklab(42.61% -0.0323 -0.0905)
OKLCH	oklch(42.61% 0.096 250.4)
XYZ	xyz(7.4685, 7.7603, 21.8689)
Luminance	0.0776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5181 #814F1F

analogous

#1F8180 #1F5181 #1F2081

triadic

#1F5181 #811F51 #51811F

tetradic

#1F5181 #801F81 #814F1F #20811F

square

#1F5181 #801F81 #814F1F #20811F

split-complementary

#1F5181 #811F20 #81801F

monochromatic

#07131E #133250 #1F5181 #2B70B2 #478FD3

Accessibility & contrast

On white

8.23

#1F5181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1F5181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5181

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5181	#FFFFFF	#000000	##FFFFFF
##1F5181	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5483

Deuteranopia (green-blind)

#2D4B80

Tritanopia (blue-blind)

#005C63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f5181;
/* rgb */ color: rgb(31, 81, 129);
/* oklch */ color: oklch(42.6% 0.096 250.4);

Tailwind

colors: {
  custom: {
    50: '#6981a6',
    500: '#1f5181',
    950: '#000000',
  },
}

SCSS

$custom: #1f5181;
$custom-light: #6981a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5181",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 129
  },
  "hsl": {
    "h": 209.388,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42613,
    "c": 0.09609,
    "h": 250.4
  },
  "luminance": 0.07761
}

Semantic roles & 50–950 ramp

primary

#1F5181

secondary

#B47D48

accent

#9243E4

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F5181

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

Preview Lab → · Contrast checker → · Palette generator →