#003D56
Closest named color: Midnight Green (#073B4C). oklch(33.9% 0.07 233.4), rgb(0, 61, 86).
Aa
White text reads best on this color (11.65:1).
About this color
#003D56 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.070 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.017 away. White text reads best on it, at 11.65:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #003D56 |
| RGB | rgb(0, 61, 86) |
| HSL | hsl(197, 100%, 17%) |
| OKLCH | oklch(33.9% 0.07 233.4) |
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 #003D56 | 11.65:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #003D56 | 1.80:1 | Fails | Lc 7.6 | Not readable |
| #003D56 text on white | 11.65:1 | AAA | Lc 96.3 | Preferred for body text |
| #003D56 text on black | 1.80:1 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#A0C7DE
oklch(80.9% 0.053 234.2)
-
Step 400
400
#69AACD
oklch(70.8% 0.084 233.2)
-
Step 500
500
#3894C0
oklch(63.1% 0.108 233.1)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900 (this color)
#003D56
oklch(33.9% 0.07 233.4)
-
Step 950
950
#0C2A39
oklch(27% 0.045 233.7)
#003D56 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) | #303D57 | 0.043 |
| Deuteranopia (no green cones) | #263556 | 0.037 |
| Tritanopia (no blue cones) | #004446 | 0.042 |
| Achromatopsia (no color) | #383838 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003D56
#003D56
oklch(33.9% 0.07 233.4)
- #532C10
#532C10
oklch(33.8% 0.07 53.3)
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 #003D56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.024
- Prussian Blue #1D3557 ΔE 0.031
- Marine Blue #01386A ΔE 0.042
- Charcoal #264653 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.047
- Gunmetal #293241 ΔE 0.052
- Marine #042E60 ΔE 0.054
Use #003D56 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.