#003137
Closest named color: Oxford Blue (#1B263B). oklch(28.6% 0.049 207.7), rgb(0, 49, 55).
Aa
White text reads best on this color (14.05:1).
About this color
#003137 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.049 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.046 away. White text reads best on it, at 14.05:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.49:1 |
| White text | 14.05:1 |
Values
| HEX | #003137 |
| RGB | rgb(0, 49, 55) |
| HSL | hsl(187, 100%, 11%) |
| OKLCH | oklch(28.6% 0.049 207.7) |
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 #003137 | 14.05:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #003137 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #003137 text on white | 14.05:1 | AAA | Lc 100.4 | Preferred for body text |
| #003137 text on black | 1.49:1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDF0
oklch(93.6% 0.016 211)
-
Step 200
200
#C2E0E4
oklch(88.6% 0.032 206.4)
-
Step 300
300
#94CCD4
oklch(80.9% 0.059 207.1)
-
Step 400
400
#4FB1BF
oklch(70.8% 0.093 208)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950 (this color)
#003137
oklch(28.6% 0.049 207.7)
#003137 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) | #2B2F37 | 0.046 |
| Deuteranopia (no green cones) | #242937 | 0.044 |
| Tritanopia (no blue cones) | #003433 | 0.015 |
| Achromatopsia (no color) | #2C2C2C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003137
#003137
oklch(28.6% 0.049 207.7)
- #40201D
#40201D
oklch(28.6% 0.05 26.3)
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 #003137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.046
- Midnight Green #073B4C ΔE 0.047
- Dark #1B2431 ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Jet #212529 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.066
Use #003137 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.