#03121C
Closest named color: Rich Navy (#001219). oklch(17.4% 0.031 237.5), rgb(3, 18, 28).
Aa
White text reads best on this color (18.96:1).
About this color
#03121C is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.031 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.009 away. White text reads best on it, at 18.96:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.96:1 |
Values
| HEX | #03121C |
| RGB | rgb(3, 18, 28) |
| HSL | hsl(204, 81%, 6%) |
| OKLCH | oklch(17.4% 0.031 237.5) |
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 #03121C | 18.96:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #03121C | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #03121C text on white | 18.96:1 | AAA | Lc 105.3 | Preferred for body text |
| #03121C text on black | 1.10:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE5
oklch(88.4% 0.02 238.7)
-
Step 300
300
#ABC5D6
oklch(80.9% 0.037 236.6)
-
Step 400
400
#7EA7C1
oklch(70.8% 0.059 236.5)
-
Step 500
500
#5C90B1
oklch(63% 0.075 237.5)
-
Step 600
600
#417A9D
oklch(55.6% 0.081 237.6)
-
Step 700
700
#336786
oklch(49.2% 0.075 237.1)
-
Step 800
800
#2B546D
oklch(42.7% 0.062 237.4)
-
Step 900
900
#274558
oklch(37.6% 0.049 237.8)
-
Step 950
950 (this color)
#03121C
oklch(17.4% 0.031 237.5)
#03121C 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) | #0D121C | 0.017 |
| Deuteranopia (no green cones) | #0A0F1C | 0.016 |
| Tritanopia (no blue cones) | #001515 | 0.023 |
| Achromatopsia (no color) | #101010 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03121C
#03121C
oklch(17.4% 0.031 237.5)
- #1A0C03
#1A0C03
oklch(17.2% 0.032 57.7)
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 #03121C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.009
- Almost Black #070D0D ΔE 0.032
- Rich Black #0D1B2A ΔE 0.045
- Dark Navy #000435 ΔE 0.071
- Dark Navy Blue #00022E ΔE 0.071
- Midnight #03012D ΔE 0.072
- Very Dark Blue #000133 ΔE 0.077
- Navy Blue #001146 ΔE 0.084
Use #03121C 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.