#031813
Closest named color: Rich Navy (#001219). oklch(18.9% 0.03 175.8), rgb(3, 24, 19).
Aa
White text reads best on this color (18.35:1).
About this color
#031813 is a very dark, muted teal or cyan. In OKLCH its lightness is 19%, its chroma 0.030 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.032 away. White text reads best on it, at 18.35:1.
| Hue family | Teals and cyans |
| Lightness | very dark (19%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.35:1 |
Values
| HEX | #031813 |
| RGB | rgb(3, 24, 19) |
| HSL | hsl(166, 78%, 5%) |
| OKLCH | oklch(18.9% 0.03 175.8) |
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 #031813 | 18.35:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #031813 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #031813 text on white | 18.35:1 | AAA | Lc 104.9 | Preferred for body text |
| #031813 text on black | 1.14:1 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A9C9BF
oklch(80.9% 0.037 174.5)
-
Step 400
400
#7AAD9F
oklch(70.7% 0.058 175.6)
-
Step 500
500
#559887
oklch(63% 0.074 175.5)
-
Step 600
600
#378371
oklch(55.7% 0.081 175.2)
-
Step 700
700
#286E5F
oklch(49% 0.074 176.4)
-
Step 800
800
#235A4D
oklch(42.7% 0.062 175.2)
-
Step 900
900
#234A40
oklch(37.7% 0.048 174.9)
-
Step 950
950 (this color)
#031813
oklch(18.9% 0.03 175.8)
#031813 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) | #171613 | 0.032 |
| Deuteranopia (no green cones) | #131313 | 0.031 |
| Tritanopia (no blue cones) | #001817 | 0.009 |
| Achromatopsia (no color) | #141414 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031813
#031813
oklch(18.9% 0.03 175.8)
- #1E0E14
#1E0E14
oklch(18.9% 0.029 356.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #031813
These curated palettes and gradients contain exactly #031813. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.032
- Almost Black #070D0D ΔE 0.043
- Rich Black #0D1B2A ΔE 0.050
- Jet #212529 ΔE 0.078
- Dark #1B2431 ΔE 0.079
- Very Dark Brown #1D0200 ΔE 0.089
- Dark Forest Green #002D04 ΔE 0.091
- Oxford Blue #1B263B ΔE 0.095
Use #031813 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.