#1C2F5B#1C2F5B

#1C2F5B is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.5% C 0.083 H 264.6°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#1C2F5B
RGB	rgb(28, 47, 91)
HSL	hsl(222, 53%, 23%)
HSV	hsv(222, 69%, 36%)
CMYK	cmyk(69.2%, 48.4%, 0%, 64.3%)
CIE-LAB	lab(20.18, 8.51, -28.75)
CIE-LCH	lch(20.18, 29.99, 286.49°)
OKLab	oklab(31.48% -0.0078 -0.0821)
OKLCH	oklch(31.48% 0.083 264.6)
XYZ	xyz(3.3831, 3.0349, 10.3030)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2F5B #5B481C

analogous

#1C4E5B #1C2F5B #281C5B

triadic

#1C2F5B #5B1C2F #2F5B1C

tetradic

#1C2F5B #5B1C4E #5B481C #1C5B28

square

#1C2F5B #5B1C4E #5B481C #1C5B28

split-complementary

#1C2F5B #5B281C #4E5B1C

monochromatic

#070C17 #0E172C #1C2F5B #2A478A #395FB9

Accessibility & contrast

On white

13.07

#1C2F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1C2F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2F5B

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2F5B	#FFFFFF	#000000	##FFFFFF
##1C2F5B	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A345D

Deuteranopia (green-blind)

#0F2E5A

Tritanopia (blue-blind)

#003940

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1c2f5b;
/* rgb */ color: rgb(28, 47, 91);
/* oklch */ color: oklch(31.5% 0.083 264.6);

Tailwind

colors: {
  custom: {
    50: '#60678a',
    500: '#1c2f5b',
    950: '#000000',
  },
}

SCSS

$custom: #1c2f5b;
$custom-light: #60678a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2f5b",
  "rgb": {
    "r": 28,
    "g": 47,
    "b": 91
  },
  "hsl": {
    "h": 221.905,
    "s": 52.941,
    "l": 23.333
  },
  "oklch": {
    "l": 0.31483,
    "c": 0.0825,
    "h": 264.6
  },
  "luminance": 0.03035
}

Semantic roles & 50–950 ramp

primary

#1C2F5B

secondary

#907942

accent

#B14BDC

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1C2F5B

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

Preview Lab → · Contrast checker → · Palette generator →