#00131B
Closest named color: Rich Navy (#001219). oklch(17.4% 0.033 225.1), rgb(0, 19, 27).
Aa
White text reads best on this color (18.93:1).
About this color
#00131B is a very dark, muted teal or cyan. In OKLCH its lightness is 17%, its chroma 0.033 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.005 away. White text reads best on it, at 18.93:1.
| Hue family | Teals and cyans |
| Lightness | very dark (17%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.93:1 |
Values
| HEX | #00131B |
| RGB | rgb(0, 19, 27) |
| HSL | hsl(198, 100%, 5%) |
| OKLCH | oklch(17.4% 0.033 225.1) |
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 #00131B | 18.93:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #00131B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #00131B text on white | 18.93:1 | AAA | Lc 105.3 | Preferred for body text |
| #00131B 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C7D4
oklch(81% 0.039 224.4)
-
Step 400
400
#76A9BE
oklch(70.6% 0.062 225.6)
-
Step 500
500
#4F94AE
oklch(63.2% 0.08 224.9)
-
Step 600
600
#2F7E9A
oklch(55.7% 0.087 225.2)
-
Step 700
700
#206A83
oklch(49.1% 0.081 224.9)
-
Step 800
800
#1D566B
oklch(42.6% 0.067 226.3)
-
Step 900
900
#1F4756
oklch(37.6% 0.052 225.3)
-
Step 950
950 (this color)
#00131B
oklch(17.4% 0.033 225.1)
#00131B 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) | #0F121B | 0.026 |
| Deuteranopia (no green cones) | #0A0F1B | 0.022 |
| Tritanopia (no blue cones) | #001516 | 0.015 |
| Achromatopsia (no color) | #111111 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00131B
#00131B
oklch(17.4% 0.033 225.1)
- #1C0B05
#1C0B05
oklch(17.4% 0.033 42.7)
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 #00131B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.005
- Almost Black #070D0D ΔE 0.033
- Rich Black #0D1B2A ΔE 0.047
- Dark Navy Blue #00022E ΔE 0.074
- Dark Navy #000435 ΔE 0.074
- Midnight #03012D ΔE 0.076
- Very Dark Blue #000133 ΔE 0.080
- Dark #1B2431 ΔE 0.086
Use #00131B 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.