#031A25
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.037 231.6), rgb(3, 26, 37).
Aa
White text reads best on this color (17.82:1).
About this color
#031A25 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.037 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.018 away. White text reads best on it, at 17.82:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.82:1 |
Values
| HEX | #031A25 |
| RGB | rgb(3, 26, 37) |
| HSL | hsl(199, 85%, 8%) |
| OKLCH | oklch(20.5% 0.037 231.6) |
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 #031A25 | 17.82:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #031A25 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #031A25 text on white | 17.82:1 | AAA | Lc 104.5 | Preferred for body text |
| #031A25 text on black | 1.17:1 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#73A9C5
oklch(70.7% 0.07 231.6)
-
Step 500
500
#4B93B6
oklch(63.1% 0.089 231.6)
-
Step 600
600
#297DA2
oklch(55.7% 0.097 231.5)
-
Step 700
700
#1A698B
oklch(49.1% 0.09 232)
-
Step 800
800
#195671
oklch(42.8% 0.075 231.7)
-
Step 900
900
#1C475B
oklch(37.7% 0.058 231.3)
-
Step 950
950 (this color)
#031A25
oklch(20.5% 0.037 231.6)
#031A25 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) | #141A26 | 0.024 |
| Deuteranopia (no green cones) | #101625 | 0.022 |
| Tritanopia (no blue cones) | #001D1E | 0.021 |
| Achromatopsia (no color) | #181818 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031A25
#031A25
oklch(20.5% 0.037 231.6)
- #241207
#241207
oklch(20.5% 0.036 51.7)
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 #031A25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.018
- Rich Navy #001219 ΔE 0.037
- Dark #1B2431 ΔE 0.055
- Almost Black #070D0D ΔE 0.061
- Jet #212529 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.067
- Navy Blue #001146 ΔE 0.073
- Dark Navy #000435 ΔE 0.081
Use #031A25 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.