#03131F
Closest named color: Rich Navy (#001219). oklch(17.9% 0.034 241.2), rgb(3, 19, 31).
Aa
White text reads best on this color (18.80:1).
About this color
#03131F is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.034 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.015 away. White text reads best on it, at 18.80:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.80:1 |
Values
| HEX | #03131F |
| RGB | rgb(3, 19, 31) |
| HSL | hsl(206, 82%, 7%) |
| OKLCH | oklch(17.9% 0.034 241.2) |
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 #03131F | 18.80:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #03131F | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #03131F text on white | 18.80:1 | AAA | Lc 105.2 | Preferred for body text |
| #03131F 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7CA6C6
oklch(70.6% 0.065 241.7)
-
Step 500
500
#5990B7
oklch(63.1% 0.083 240.7)
-
Step 600
600
#3D7AA3
oklch(55.7% 0.09 240.4)
-
Step 700
700
#2F668C
oklch(49.1% 0.084 241.5)
-
Step 800
800
#285372
oklch(42.6% 0.07 242.3)
-
Step 900
900
#25455C
oklch(37.7% 0.055 241.5)
-
Step 950
950 (this color)
#03131F
oklch(17.9% 0.034 241.2)
#03131F 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 | 0.017 |
| Deuteranopia (no green cones) | #09101F | 0.014 |
| Tritanopia (no blue cones) | #001617 | 0.024 |
| Achromatopsia (no color) | #121212 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03131F
#03131F
oklch(17.9% 0.034 241.2)
- #1C0D02
#1C0D02
oklch(17.8% 0.035 61.2)
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 #03131F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.015
- Almost Black #070D0D ΔE 0.039
- Rich Black #0D1B2A ΔE 0.039
- Dark Navy #000435 ΔE 0.068
- Dark Navy Blue #00022E ΔE 0.070
- Midnight #03012D ΔE 0.071
- Very Dark Blue #000133 ΔE 0.075
- Navy Blue #001146 ΔE 0.078
Use #03131F 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.