#123F7E#123F7E

#123F7E is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.117 H 258.0°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#123F7E
RGB	rgb(18, 63, 126)
HSL	hsl(215, 75%, 28%)
HSV	hsv(215, 86%, 49%)
CMYK	cmyk(85.7%, 50%, 0%, 50.6%)
CIE-LAB	lab(27.27, 10.26, -39.90)
CIE-LCH	lch(27.27, 41.20, 284.41°)
OKLab	oklab(37.61% -0.0244 -0.1148)
OKLCH	oklch(37.61% 0.117 258)
XYZ	xyz(5.7915, 5.1893, 20.4310)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F7E #7E5112

analogous

#12757E #123F7E #1B127E

triadic

#123F7E #7E123F #3F7E12

tetradic

#123F7E #7E1275 #7E5112 #127E1B

square

#123F7E #7E1275 #7E5112 #127E1B

split-complementary

#123F7E #7E1B12 #757E12

monochromatic

#040D1B #0A2448 #123F7E #1A5AB4 #2A76E1

Accessibility & contrast

On white

10.30

#123F7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#123F7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F7E

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F7E	#FFFFFF	#000000	##FFFFFF
##123F7E	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4680

Deuteranopia (green-blind)

#003C7D

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123f7e;
/* rgb */ color: rgb(18, 63, 126);
/* oklch */ color: oklch(37.6% 0.117 258.0);

Tailwind

colors: {
  custom: {
    50: '#6473a4',
    500: '#123f7e',
    950: '#000000',
  },
}

SCSS

$custom: #123f7e;
$custom-light: #6473a4;
$custom-dark: #000000;

JSON

{
  "hex": "#123f7e",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 126
  },
  "hsl": {
    "h": 215,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37612,
    "c": 0.11734,
    "h": 258
  },
  "luminance": 0.0519
}

Semantic roles & 50–950 ramp

primary

#123F7E

secondary

#B48038

accent

#A436F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #123F7E

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

Preview Lab → · Contrast checker → · Palette generator →