#12377D#12377D

#12377D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.7% C 0.126 H 261.6°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#12377D
RGB	rgb(18, 55, 125)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 86%, 49%)
CMYK	cmyk(85.6%, 56%, 0%, 51%)
CIE-LAB	lab(24.77, 15.49, -43.32)
CIE-LCH	lch(24.77, 46.00, 289.68°)
OKLab	oklab(35.68% -0.0185 -0.125)
OKLCH	oklch(35.68% 0.126 261.6)
XYZ	xyz(5.3160, 4.3410, 19.9558)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12377D #7D5812

analogous

#126C7D #12377D #22127D

triadic

#12377D #7D1237 #377D12

tetradic

#12377D #7D126C #7D5812 #127D22

square

#12377D #7D126C #7D5812 #127D22

split-complementary

#12377D #7D2212 #6C7D12

monochromatic

#040C1B #0A1F48 #12377D #1A4FB2 #2968E0

Accessibility & contrast

On white

11.24

#12377D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#12377D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12377D

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12377D	#FFFFFF	#000000	##FFFFFF
##12377D	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#00367C

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #12377d;
/* rgb */ color: rgb(18, 55, 125);
/* oklch */ color: oklch(35.7% 0.126 261.6);

Tailwind

colors: {
  custom: {
    50: '#656da3',
    500: '#12377d',
    950: '#000000',
  },
}

SCSS

$custom: #12377d;
$custom-light: #656da3;
$custom-dark: #000000;

JSON

{
  "hex": "#12377d",
  "rgb": {
    "r": 18,
    "g": 55,
    "b": 125
  },
  "hsl": {
    "h": 219.252,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35677,
    "c": 0.12636,
    "h": 261.6
  },
  "luminance": 0.04342
}

Semantic roles & 50–950 ramp

primary

#12377D

secondary

#B38838

accent

#B136F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #12377D

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

Preview Lab → · Contrast checker → · Palette generator →