#003976
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.118 255.5), rgb(0, 57, 118).
Aa
White text reads best on this color (11.37:1).
About this color
#003976 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.118 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.021 away. White text reads best on it, at 11.37:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.84:1 |
| White text | 11.37:1 |
Values
| HEX | #003976 |
| RGB | rgb(0, 57, 118) |
| HSL | hsl(211, 100%, 23%) |
| OKLCH | oklch(35.1% 0.118 255.5) |
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 #003976 | 11.37:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #003976 | 1.84:1 | Fails | Lc 8.3 | Not readable |
| #003976 text on white | 11.37:1 | AAA | Lc 95.6 | Preferred for body text |
| #003976 text on black | 1.84:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9BC4F9
oklch(81% 0.087 255.1)
-
Step 400
400
#61A2F7
oklch(70.6% 0.142 255.8)
-
Step 500
500
#2F88F3
oklch(63% 0.181 255.6)
-
Step 600
600
#0070DC
oklch(55.6% 0.186 255.4)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900 (this color)
#003976
oklch(35.1% 0.118 255.5)
-
Step 950
950
#09264A
oklch(27% 0.075 255.8)
#003976 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) | #123F78 | 0.022 |
| Deuteranopia (no green cones) | #003575 | 0.012 |
| Tritanopia (no blue cones) | #004852 | 0.087 |
| Achromatopsia (no color) | #3A3A3A | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003976
#003976
oklch(35.1% 0.118 255.5)
- #513400
#513400
oklch(35.1% 0.074 74.8)
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 #003976, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.021
- Twilight Blue #0A437A ΔE 0.031
- Marine #042E60 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.055
- Cobalt #1E488F ΔE 0.064
- Light Navy #155084 ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.075
- Midnight Green #073B4C ΔE 0.076
Use #003976 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.