#143237
Closest named color: Gunmetal (#293241). oklch(29.7% 0.037 209.7), rgb(20, 50, 55).
Aa
White text reads best on this color (13.62:1).
About this color
#143237 is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.037 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.035 away. White text reads best on it, at 13.62:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.54:1 |
| White text | 13.62:1 |
Values
| HEX | #143237 |
| RGB | rgb(20, 50, 55) |
| HSL | hsl(189, 47%, 15%) |
| OKLCH | oklch(29.7% 0.037 209.7) |
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 #143237 | 13.62:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #143237 | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #143237 text on white | 13.62:1 | AAA | Lc 100.0 | Preferred for body text |
| #143237 text on black | 1.54:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE2
oklch(88.5% 0.024 209.8)
-
Step 300
300
#A1C9D0
oklch(80.9% 0.043 209.4)
-
Step 400
400
#6AADB8
oklch(70.7% 0.07 209)
-
Step 500
500
#3B98A7
oklch(63.1% 0.089 209.9)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#114A52
oklch(37.7% 0.058 208.8)
-
Step 950
950 (this color)
#143237
oklch(29.7% 0.037 209.7)
#143237 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) | #2E3037 | 0.036 |
| Deuteranopia (no green cones) | #282C37 | 0.032 |
| Tritanopia (no blue cones) | #003433 | 0.019 |
| Achromatopsia (no color) | #2E2E2E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143237
#143237
oklch(29.7% 0.037 209.7)
- #3D2622
#3D2622
oklch(29.6% 0.036 30.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #143237, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.035
- Midnight Green #073B4C ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.045
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.048
- Onyx #343A40 ΔE 0.056
Use #143237 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.