#043967
Closest named color: Marine Blue (#01386A). oklch(34% 0.095 251), rgb(4, 57, 103).
Aa
White text reads best on this color (11.75:1).
About this color
#043967 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.095 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.007 away. White text reads best on it, at 11.75:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.75:1 |
Values
| HEX | #043967 |
| RGB | rgb(4, 57, 103) |
| HSL | hsl(208, 93%, 21%) |
| OKLCH | oklch(34% 0.095 251) |
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 #043967 | 11.75:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #043967 | 1.78:1 | Fails | Lc 7.4 | Not readable |
| #043967 text on white | 11.75:1 | AAA | Lc 96.5 | Preferred for body text |
| #043967 text on black | 1.78:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9FC5EE
oklch(81% 0.071 250.6)
-
Step 400
400
#68A5E5
oklch(70.7% 0.114 250.8)
-
Step 500
500
#3A8DDE
oklch(63.1% 0.146 250.9)
-
Step 600
600
#0975CC
oklch(55.6% 0.159 251.1)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#03508F
oklch(42.7% 0.123 251.2)
-
Step 900
900 (this color)
#043967
oklch(34% 0.095 251)
-
Step 950
950
#0C2843
oklch(27.1% 0.061 250.4)
#043967 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) | #213C69 | 0.026 |
| Deuteranopia (no green cones) | #0F3466 | 0.015 |
| Tritanopia (no blue cones) | #00444B | 0.069 |
| Achromatopsia (no color) | #383838 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043967
#043967
oklch(34% 0.095 251)
- #4F3000
#4F3000
oklch(33.9% 0.073 70.9)
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 #043967, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.007
- Prussian Blue #1D3557 ΔE 0.032
- Marine #042E60 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.043
- Midnight Green #073B4C ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.062
- Charcoal #264653 ΔE 0.068
Use #043967 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.