#123F7B#123F7B

#123F7B is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.4% C 0.113 H 257.2°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#123F7B
RGB	rgb(18, 63, 123)
HSL	hsl(214, 74%, 28%)
HSV	hsv(214, 85%, 48%)
CMYK	cmyk(85.4%, 48.8%, 0%, 51.8%)
CIE-LAB	lab(27.05, 8.99, -38.36)
CIE-LCH	lch(27.05, 39.40, 283.19°)
OKLab	oklab(37.38% -0.025 -0.1102)
OKLCH	oklch(37.38% 0.113 257.2)
XYZ	xyz(5.6008, 5.1130, 19.4268)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F7B #7B4E12

analogous

#12737B #123F7B #1A127B

triadic

#123F7B #7B123F #3F7B12

tetradic

#123F7B #7B1273 #7B4E12 #127B1A

square

#123F7B #7B1273 #7B4E12 #127B1A

split-complementary

#123F7B #7B1A12 #737B12

monochromatic

#040E1B #0A2446 #123F7B #1A5AB0 #2877E0

Accessibility & contrast

On white

10.38

#123F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#123F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F7B

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F7B	#FFFFFF	#000000	##FFFFFF
##123F7B	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#003C7A

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123f7b;
/* rgb */ color: rgb(18, 63, 123);
/* oklch */ color: oklch(37.4% 0.113 257.2);

Tailwind

colors: {
  custom: {
    50: '#6473a2',
    500: '#123f7b',
    950: '#000000',
  },
}

SCSS

$custom: #123f7b;
$custom-light: #6473a2;
$custom-dark: #000000;

JSON

{
  "hex": "#123f7b",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 123
  },
  "hsl": {
    "h": 214.286,
    "s": 74.468,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3738,
    "c": 0.11303,
    "h": 257.2
  },
  "luminance": 0.05114
}

Semantic roles & 50–950 ramp

primary

#123F7B

secondary

#B17D38

accent

#A137F1

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #123F7B

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

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