#1B4D7D#1B4D7D

#1B4D7D is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.2% C 0.096 H 250.6°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D7D
RGB	rgb(27, 77, 125)
HSL	hsl(209, 64%, 30%)
HSV	hsv(209, 78%, 49%)
CMYK	cmyk(78.4%, 38.4%, 0%, 51%)
CIE-LAB	lab(31.85, 1.36, -31.93)
CIE-LCH	lch(31.85, 31.95, 272.45°)
OKLab	oklab(41.23% -0.0319 -0.0909)
OKLCH	oklch(41.23% 0.096 250.6)
XYZ	xyz(6.8061, 7.0206, 20.3945)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D7D #7D4B1B

analogous

#1B7D7C #1B4D7D #1B1C7D

triadic

#1B4D7D #7D1B4D #4D7D1B

tetradic

#1B4D7D #7C1B7D #7D4B1B #1C7D1B

square

#1B4D7D #7C1B7D #7D4B1B #1C7D1B

split-complementary

#1B4D7D #7D1B1C #7D7C1B

monochromatic

#051019 #102E4B #1B4D7D #266CAF #3D8BD5

Accessibility & contrast

On white

8.73

#1B4D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D7D

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D7D	#FFFFFF	#000000	##FFFFFF
##1B4D7D	1.00	8.73	2.40	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37507F

Deuteranopia (green-blind)

#28477C

Tritanopia (blue-blind)

#00585F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4d7d;
/* rgb */ color: rgb(27, 77, 125);
/* oklch */ color: oklch(41.2% 0.096 250.6);

Tailwind

colors: {
  custom: {
    50: '#677ea3',
    500: '#1b4d7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d7d;
$custom-light: #677ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d7d",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 125
  },
  "hsl": {
    "h": 209.388,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.41228,
    "c": 0.09639,
    "h": 250.6
  },
  "luminance": 0.07021
}

Semantic roles & 50–950 ramp

primary

#1B4D7D

secondary

#B17943

accent

#9240E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D7D

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

Preview Lab → · Contrast checker → · Palette generator →