#1F5E9E#1F5E9E

#1F5E9E is a mid, vivid cyan. Relative luminance 0.108; OKLCH L 47.6% C 0.121 H 252.3°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F5E9E
RGB	rgb(31, 94, 158)
HSL	hsl(210, 67%, 37%)
HSV	hsv(210, 80%, 62%)
CMYK	cmyk(80.4%, 40.5%, 0%, 38%)
CIE-LAB	lab(39.18, 3.86, -40.35)
CIE-LCH	lch(39.18, 40.54, 275.46°)
OKLab	oklab(47.62% -0.0369 -0.1153)
OKLCH	oklch(47.62% 0.121 252.3)
XYZ	xyz(10.7370, 10.7640, 33.8529)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5E9E #9E5F1F

analogous

#1F9E9E #1F5E9E #1F1F9E

triadic

#1F5E9E #9E1F5E #5E9E1F

tetradic

#1F5E9E #9E1F9E #9E5F1F #1F9E1F

square

#1F5E9E #9E1F9E #9E5F1F #1F9E1F

split-complementary

#1F5E9E #9E1F1F #9E9E1F

monochromatic

#0B2138 #15406B #1F5E9E #297CD1 #599BDE

Accessibility & contrast

On white

6.66

#1F5E9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#1F5E9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5E9E

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5E9E	#FFFFFF	#000000	##FFFFFF
##1F5E9E	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F63A1

Deuteranopia (green-blind)

#2A579D

Tritanopia (blue-blind)

#006D76

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1f5e9e;
/* rgb */ color: rgb(31, 94, 158);
/* oklch */ color: oklch(47.6% 0.121 252.3);

Tailwind

colors: {
  custom: {
    50: '#6f8bbb',
    500: '#1f5e9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f5e9e;
$custom-light: #6f8bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5e9e",
  "rgb": {
    "r": 31,
    "g": 94,
    "b": 158
  },
  "hsl": {
    "h": 210.236,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.47619,
    "c": 0.12106,
    "h": 252.3
  },
  "luminance": 0.10765
}

Semantic roles & 50–950 ramp

primary

#1F5E9E

secondary

#C28D56

accent

#953EEA

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F5E9E

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

Preview Lab → · Contrast checker → · Palette generator →