#03373D
Closest named color: Midnight Green (#073B4C). oklch(30.9% 0.051 207.1), rgb(3, 55, 61).
Aa
White text reads best on this color (12.98:1).
About this color
#03373D is a dark, muted teal or cyan. In OKLCH its lightness is 31%, its chroma 0.051 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.028 away. White text reads best on it, at 12.98:1.
| Hue family | Teals and cyans |
| Lightness | dark (31%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.61:1 |
| White text | 12.98:1 |
Values
| HEX | #03373D |
| RGB | rgb(3, 55, 61) |
| HSL | hsl(186, 91%, 13%) |
| OKLCH | oklch(30.9% 0.051 207.1) |
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 #03373D | 12.98:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #03373D | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #03373D text on white | 12.98:1 | AAA | Lc 98.9 | Preferred for body text |
| #03373D text on black | 1.61:1 | 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
#DDEDF0
oklch(93.5% 0.017 210.2)
-
Step 200
200
#C1E0E4
oklch(88.5% 0.033 206.1)
-
Step 300
300
#92CCD4
oklch(80.8% 0.061 206.7)
-
Step 400
400
#49B2BF
oklch(70.8% 0.097 206.5)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008390
oklch(55.7% 0.096 207)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950 (this color)
#03373D
oklch(30.9% 0.051 207.1)
#03373D 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) | #31343D | 0.049 |
| Deuteranopia (no green cones) | #292F3D | 0.044 |
| Tritanopia (no blue cones) | #003A39 | 0.015 |
| Achromatopsia (no color) | #313131 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03373D
#03373D
oklch(30.9% 0.051 207.1)
- #462522
#462522
oklch(30.7% 0.051 25.9)
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 #03373D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.040
- Gunmetal #293241 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.054
- Onyx #343A40 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.059
- Jet #212529 ΔE 0.064
Use #03373D 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.