#001131
Closest named color: Dark Navy (#000435). oklch(18.6% 0.069 258.1), rgb(0, 17, 49).
Aa
White text reads best on this color (18.67:1).
About this color
#001131 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.069 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Navy (#000435), ΔE 0.038 away. White text reads best on it, at 18.67:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Navy (#000435) |
| Black text | 1.12:1 |
| White text | 18.67:1 |
Values
| HEX | #001131 |
| RGB | rgb(0, 17, 49) |
| HSL | hsl(219, 100%, 10%) |
| OKLCH | oklch(18.6% 0.069 258.1) |
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 #001131 | 18.67:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #001131 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #001131 text on white | 18.67:1 | AAA | Lc 105.0 | Preferred for body text |
| #001131 text on black | 1.12:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#A0C3F6
oklch(81% 0.082 257.7)
-
Step 400
400
#6BA1F2
oklch(70.6% 0.133 258.3)
-
Step 500
500
#4287ED
oklch(63% 0.169 258.3)
-
Step 600
600
#206EDB
oklch(55.5% 0.183 258.2)
-
Step 700
700
#115CBE
oklch(49.1% 0.169 257.9)
-
Step 800
800
#134B9A
oklch(42.6% 0.141 258.4)
-
Step 900
900
#17407A
oklch(37.7% 0.109 257.8)
-
Step 950
950 (this color)
#001131
oklch(18.6% 0.069 258.1)
#001131 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) | #001532 | 0.013 |
| Deuteranopia (no green cones) | #001030 | 0.004 |
| Tritanopia (no blue cones) | #00191E | 0.053 |
| Achromatopsia (no color) | #121212 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001131
#001131
oklch(18.6% 0.069 258.1)
- #1C1000
#1C1000
oklch(18.5% 0.039 77.5)
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 #001131, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Navy #000435 ΔE 0.038
- Navy Blue #001146 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.046
- Dark Navy Blue #00022E ΔE 0.049
- Very Dark Blue #000133 ΔE 0.049
- Rich Navy #001219 ΔE 0.051
- Midnight #03012D ΔE 0.051
- Night Blue #040348 ΔE 0.053
Use #001131 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.