#191F36
Closest named color: Dark (#1B2431). oklch(24.6% 0.045 271.7), rgb(25, 31, 54).
Aa
White text reads best on this color (16.27:1).
About this color
#191F36 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.045 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.023 away. White text reads best on it, at 16.27:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.27:1 |
Values
| HEX | #191F36 |
| RGB | rgb(25, 31, 54) |
| HSL | hsl(228, 37%, 15%) |
| OKLCH | oklch(24.6% 0.045 271.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #191F36 | 16.27:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #191F36 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #191F36 text on white | 16.27:1 | AAA | Lc 103.2 | Preferred for body text |
| #191F36 text on black | 1.29:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8ED
oklch(88.4% 0.03 273.1)
-
Step 300
300
#B4BFE4
oklch(80.8% 0.054 272.1)
-
Step 400
400
#8D9ED6
oklch(70.7% 0.085 271.1)
-
Step 500
500
#7285CB
oklch(63.1% 0.108 271.5)
-
Step 600
600
#5B6DB8
oklch(55.5% 0.118 271.9)
-
Step 700
700
#4B5B9F
oklch(49.1% 0.11 271.8)
-
Step 800
800
#3D4B80
oklch(42.7% 0.09 271)
-
Step 900
900
#343F67
oklch(37.8% 0.07 271.1)
-
Step 950
950 (this color)
#191F36
oklch(24.6% 0.045 271.7)
#191F36 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #172137 | 0.007 |
| Deuteranopia (no green cones) | #141F35 | 0.008 |
| Tritanopia (no blue cones) | #0E2427 | 0.042 |
| Achromatopsia (no color) | #202020 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191F36
#191F36
oklch(24.6% 0.045 271.7)
- #282004
#282004
oklch(24.6% 0.045 93.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #191F36, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.023
- Oxford Blue #1B263B ΔE 0.024
- Rich Black #0D1B2A ΔE 0.033
- Jet #212529 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.060
- Navy Blue #001146 ΔE 0.068
- Gunmetal #293241 ΔE 0.072
- Dark Indigo #1F0954 ΔE 0.079
Use #191F36 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.