#1C4E8B#1C4E8B

#1C4E8B is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.4% C 0.114 H 255.4°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1C4E8B
RGB	rgb(28, 78, 139)
HSL	hsl(213, 66%, 33%)
HSV	hsv(213, 80%, 55%)
CMYK	cmyk(79.9%, 43.9%, 0%, 45.5%)
CIE-LAB	lab(33.05, 6.44, -38.66)
CIE-LCH	lch(33.05, 39.19, 279.46°)
OKLab	oklab(42.44% -0.0288 -0.1107)
OKLCH	oklch(42.44% 0.114 255.4)
XYZ	xyz(7.8617, 7.5588, 25.4657)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4E8B #8B591C

analogous

#1C858B #1C4E8B #211C8B

triadic

#1C4E8B #8B1C4E #4E8B1C

tetradic

#1C4E8B #8B1C85 #8B591C #1C8B21

square

#1C4E8B #8B1C85 #8B591C #1C8B21

split-complementary

#1C4E8B #8B211C #858B1C

monochromatic

#071525 #123158 #1C4E8B #266BBE #4789DA

Accessibility & contrast

On white

8.36

#1C4E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1C4E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4E8B

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4E8B	#FFFFFF	#000000	##FFFFFF
##1C4E8B	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30538D

Deuteranopia (green-blind)

#1B498A

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1c4e8b;
/* rgb */ color: rgb(28, 78, 139);
/* oklch */ color: oklch(42.4% 0.114 255.4);

Tailwind

colors: {
  custom: {
    50: '#6a7fad',
    500: '#1c4e8b',
    950: '#000000',
  },
}

SCSS

$custom: #1c4e8b;
$custom-light: #6a7fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4e8b",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 139
  },
  "hsl": {
    "h": 212.973,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42443,
    "c": 0.11436,
    "h": 255.4
  },
  "luminance": 0.0756
}

Semantic roles & 50–950 ramp

primary

#1C4E8B

secondary

#BC8747

accent

#9C3EE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1C4E8B

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

Preview Lab → · Contrast checker → · Palette generator →