#123E8A#123E8A

#123E8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.136 H 260.7°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#123E8A
RGB	rgb(18, 62, 138)
HSL	hsl(218, 77%, 31%)
HSV	hsv(218, 87%, 54%)
CMYK	cmyk(87%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(27.87, 15.99, -46.41)
CIE-LCH	lch(27.87, 49.08, 289.02°)
OKLab	oklab(38.36% -0.022 -0.1339)
OKLCH	oklch(38.36% 0.136 260.7)
XYZ	xyz(6.5579, 5.4080, 24.7380)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E8A #8A5E12

analogous

#127A8A #123E8A #22128A

triadic

#123E8A #8A123E #3E8A12

tetradic

#123E8A #8A127A #8A5E12 #128A22

square

#123E8A #8A127A #8A5E12 #128A22

split-complementary

#123E8A #8A2212 #7A8A12

monochromatic

#040D1E #0B2654 #123E8A #1956C0 #3273E4

Accessibility & contrast

On white

10.09

#123E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#123E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E8A

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E8A	#FFFFFF	#000000	##FFFFFF
##123E8A	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #123e8a;
/* rgb */ color: rgb(18, 62, 138);
/* oklch */ color: oklch(38.4% 0.136 260.7);

Tailwind

colors: {
  custom: {
    50: '#6872ad',
    500: '#123e8a',
    950: '#000000',
  },
}

SCSS

$custom: #123e8a;
$custom-light: #6872ad;
$custom-dark: #000000;

JSON

{
  "hex": "#123e8a",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 218,
    "s": 76.923,
    "l": 30.588
  },
  "oklch": {
    "l": 0.38357,
    "c": 0.13572,
    "h": 260.7
  },
  "luminance": 0.05409
}

Semantic roles & 50–950 ramp

primary

#123E8A

secondary

#BF8E39

accent

#AD34F3

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #123E8A

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

Preview Lab → · Contrast checker → · Palette generator →