#123F7C#123F7C

#123F7C is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.5% C 0.114 H 257.5°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#123F7C
RGB	rgb(18, 63, 124)
HSL	hsl(215, 75%, 28%)
HSV	hsv(215, 85%, 49%)
CMYK	cmyk(85.5%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.12, 9.41, -38.88)
CIE-LCH	lch(27.12, 40.00, 283.61°)
OKLab	oklab(37.46% -0.0248 -0.1118)
OKLCH	oklch(37.46% 0.114 257.5)
XYZ	xyz(5.6637, 5.1382, 19.7581)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F7C #7C4F12

analogous

#12747C #123F7C #1A127C

triadic

#123F7C #7C123F #3F7C12

tetradic

#123F7C #7C1274 #7C4F12 #127C1A

square

#123F7C #7C1274 #7C4F12 #127C1A

split-complementary

#123F7C #7C1A12 #747C12

monochromatic

#040E1B #0A2447 #123F7C #1A5AB1 #2976E0

Accessibility & contrast

On white

10.36

#123F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#123F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F7C

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F7C	#FFFFFF	#000000	##FFFFFF
##123F7C	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D457E

Deuteranopia (green-blind)

#003C7B

Tritanopia (blue-blind)

#004E57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123f7c;
/* rgb */ color: rgb(18, 63, 124);
/* oklch */ color: oklch(37.5% 0.114 257.5);

Tailwind

colors: {
  custom: {
    50: '#6473a2',
    500: '#123f7c',
    950: '#000000',
  },
}

SCSS

$custom: #123f7c;
$custom-light: #6473a2;
$custom-dark: #000000;

JSON

{
  "hex": "#123f7c",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 214.528,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37457,
    "c": 0.11447,
    "h": 257.5
  },
  "luminance": 0.05139
}

Semantic roles & 50–950 ramp

primary

#123F7C

secondary

#B27E38

accent

#A237F1

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #123F7C

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

Preview Lab → · Contrast checker → · Palette generator →