#1F4881#1F4881

#1F4881 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.4% C 0.106 H 257.3°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F4881
RGB	rgb(31, 72, 129)
HSL	hsl(215, 61%, 31%)
HSV	hsv(215, 76%, 51%)
CMYK	cmyk(76%, 44.2%, 0%, 49.4%)
CIE-LAB	lab(30.66, 6.87, -36.30)
CIE-LCH	lch(30.66, 36.94, 280.71°)
OKLab	oklab(40.42% -0.0234 -0.1038)
OKLCH	oklch(40.42% 0.106 257.3)
XYZ	xyz(6.8434, 6.5103, 21.6606)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4881 #81581F

analogous

#1F7981 #1F4881 #271F81

triadic

#1F4881 #811F48 #48811F

tetradic

#1F4881 #811F79 #81581F #1F8127

square

#1F4881 #811F79 #81581F #1F8127

split-complementary

#1F4881 #81271F #79811F

monochromatic

#07111E #132C50 #1F4881 #2B64B2 #4782D3

Accessibility & contrast

On white

9.12

#1F4881 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1F4881 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4881

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4881	#FFFFFF	#000000	##FFFFFF
##1F4881	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4D83

Deuteranopia (green-blind)

#1B4480

Tritanopia (blue-blind)

#00555E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4881;
/* rgb */ color: rgb(31, 72, 129);
/* oklch */ color: oklch(40.4% 0.106 257.3);

Tailwind

colors: {
  custom: {
    50: '#697aa6',
    500: '#1f4881',
    950: '#000000',
  },
}

SCSS

$custom: #1f4881;
$custom-light: #697aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4881",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 129
  },
  "hsl": {
    "h": 214.898,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.40419,
    "c": 0.1064,
    "h": 257.3
  },
  "luminance": 0.06511
}

Semantic roles & 50–950 ramp

primary

#1F4881

secondary

#B48748

accent

#A143E4

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1F4881

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

Preview Lab → · Contrast checker → · Palette generator →