#01131F
Closest named color: Rich Navy (#001219). oklch(17.7% 0.037 237.5), rgb(1, 19, 31).
Aa
White text reads best on this color (18.84:1).
About this color
#01131F is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.037 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.013 away. White text reads best on it, at 18.84:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.84:1 |
Values
| HEX | #01131F |
| RGB | rgb(1, 19, 31) |
| HSL | hsl(204, 94%, 6%) |
| OKLCH | oklch(17.7% 0.037 237.5) |
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 #01131F | 18.84:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #01131F | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #01131F text on white | 18.84:1 | AAA | Lc 105.2 | Preferred for body text |
| #01131F text on black | 1.11:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A7C5DA
oklch(80.8% 0.044 238.6)
-
Step 400
400
#77A7C7
oklch(70.6% 0.07 238.2)
-
Step 500
500
#5191B9
oklch(63% 0.089 237.9)
-
Step 600
600
#337BA5
oklch(55.6% 0.096 237.7)
-
Step 700
700
#24678D
oklch(49% 0.09 237.7)
-
Step 800
800
#205473
oklch(42.6% 0.075 238.4)
-
Step 900
900
#20465D
oklch(37.7% 0.059 237.6)
-
Step 950
950 (this color)
#01131F
oklch(17.7% 0.037 237.5)
#01131F 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) | #0D1320 | 0.020 |
| Deuteranopia (no green cones) | #09101F | 0.017 |
| Tritanopia (no blue cones) | #001617 | 0.024 |
| Achromatopsia (no color) | #111111 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01131F
#01131F
oklch(17.7% 0.037 237.5)
- #1D0C02
#1D0C02
oklch(17.7% 0.037 55.7)
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 #01131F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.013
- Almost Black #070D0D ΔE 0.039
- Rich Black #0D1B2A ΔE 0.041
- Dark Navy #000435 ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.069
- Midnight #03012D ΔE 0.070
- Very Dark Blue #000133 ΔE 0.074
- Navy Blue #001146 ΔE 0.078
Use #01131F 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.