#03181F
Closest named color: Rich Navy (#001219). oklch(19.5% 0.031 222), rgb(3, 24, 31).
Aa
White text reads best on this color (18.19:1).
About this color
#03181F is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.031 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.026 away. White text reads best on it, at 18.19:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.19:1 |
Values
| HEX | #03181F |
| RGB | rgb(3, 24, 31) |
| HSL | hsl(195, 82%, 7%) |
| OKLCH | oklch(19.5% 0.031 222) |
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 #03181F | 18.19:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #03181F | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #03181F text on white | 18.19:1 | AAA | Lc 104.8 | Preferred for body text |
| #03181F text on black | 1.15:1 | 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
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D2
oklch(81% 0.038 220.6)
-
Step 400
400
#77A9BB
oklch(70.6% 0.059 222.4)
-
Step 500
500
#5194AA
oklch(63.1% 0.076 221.5)
-
Step 600
600
#327E96
oklch(55.6% 0.082 222.2)
-
Step 700
700
#236A80
oklch(49.1% 0.077 222.5)
-
Step 800
800
#205768
oklch(42.8% 0.063 221.7)
-
Step 900
900
#204754
oklch(37.5% 0.049 222.3)
-
Step 950
950 (this color)
#03181F
oklch(19.5% 0.031 222)
#03181F 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) | #14171F | 0.025 |
| Deuteranopia (no green cones) | #10141F | 0.023 |
| Tritanopia (no blue cones) | #001A1A | 0.016 |
| Achromatopsia (no color) | #151515 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03181F
#03181F
oklch(19.5% 0.031 222)
- #211009
#211009
oklch(19.6% 0.032 43)
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 #03181F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.026
- Rich Black #0D1B2A ΔE 0.028
- Almost Black #070D0D ΔE 0.048
- Dark #1B2431 ΔE 0.065
- Jet #212529 ΔE 0.071
- Oxford Blue #1B263B ΔE 0.079
- Navy Blue #001146 ΔE 0.082
- Dark Navy #000435 ΔE 0.083
Use #03181F 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.