#131735
Closest named color: Rich Black (#0D1B2A). oklch(21.9% 0.058 274.8), rgb(19, 23, 53).
Aa
White text reads best on this color (17.47:1).
About this color
#131735 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.058 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.47:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.47:1 |
Values
| HEX | #131735 |
| RGB | rgb(19, 23, 53) |
| HSL | hsl(233, 47%, 14%) |
| OKLCH | oklch(21.9% 0.058 274.8) |
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 #131735 | 17.47:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #131735 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #131735 text on white | 17.47:1 | AAA | Lc 104.2 | Preferred for body text |
| #131735 text on black | 1.20:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B3BEEE
oklch(80.9% 0.069 274.7)
-
Step 400
400
#8C9BE5
oklch(70.7% 0.11 274.5)
-
Step 500
500
#7180DE
oklch(63.1% 0.142 274.8)
-
Step 600
600
#5B68CB
oklch(55.7% 0.152 274.7)
-
Step 700
700
#4B56B0
oklch(49.2% 0.142 274.7)
-
Step 800
800
#3D468E
oklch(42.6% 0.118 274.9)
-
Step 900
900
#343C72
oklch(37.8% 0.092 274.8)
-
Step 950
950 (this color)
#131735
oklch(21.9% 0.058 274.8)
#131735 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) | #091B36 | 0.017 |
| Deuteranopia (no green cones) | #051834 | 0.020 |
| Tritanopia (no blue cones) | #041E23 | 0.052 |
| Achromatopsia (no color) | #1A1A1A | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131735
#131735
oklch(21.9% 0.058 274.8)
- #211A00
#211A00
oklch(22% 0.045 95.3)
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 #131735, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Navy Blue #001146 ΔE 0.048
- Dark #1B2431 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.053
- Jet #212529 ΔE 0.066
- Midnight Purple #280137 ΔE 0.068
- Dark Indigo #1F0954 ΔE 0.068
- Rich Navy #001219 ΔE 0.068
Use #131735 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.