#03383B
Closest named color: Midnight Green (#073B4C). oklch(31.1% 0.051 200.9), rgb(3, 56, 59).
Aa
White text reads best on this color (12.86:1).
About this color
#03383B is a dark, muted teal or cyan. In OKLCH its lightness is 31%, its chroma 0.051 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.031 away. White text reads best on it, at 12.86:1.
| Hue family | Teals and cyans |
| Lightness | dark (31%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.63:1 |
| White text | 12.86:1 |
Values
| HEX | #03383B |
| RGB | rgb(3, 56, 59) |
| HSL | hsl(183, 90%, 12%) |
| OKLCH | oklch(31.1% 0.051 200.9) |
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 #03383B | 12.86:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #03383B | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #03383B text on white | 12.86:1 | AAA | Lc 98.7 | Preferred for body text |
| #03383B text on black | 1.63:1 | 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
#DDEEEF
oklch(93.7% 0.018 201.1)
-
Step 200
200
#C0E0E2
oklch(88.4% 0.034 201.2)
-
Step 300
300
#92CDD1
oklch(80.9% 0.061 201.3)
-
Step 400
400
#48B3B9
oklch(70.8% 0.097 200.4)
-
Step 500
500
#009CA4
oklch(63% 0.107 201.2)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950 (this color)
#03383B
oklch(31.1% 0.051 200.9)
#03383B 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) | #33353B | 0.052 |
| Deuteranopia (no green cones) | #2B2F3B | 0.048 |
| Tritanopia (no blue cones) | #003B39 | 0.012 |
| Achromatopsia (no color) | #323232 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03383B
#03383B
oklch(31.1% 0.051 200.9)
- #472525
#472525
oklch(31% 0.052 20.5)
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 #03383B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.042
- Gunmetal #293241 ΔE 0.045
- Onyx #343A40 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.060
- Pakistan Green #283618 ΔE 0.061
- Oxford Blue #1B263B ΔE 0.064
Use #03383B 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.