#04334E
Closest named color: Prussian Blue (#1D3557). oklch(30.7% 0.068 240.6), rgb(4, 51, 78).
Aa
White text reads best on this color (13.21:1).
About this color
#04334E is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.068 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 13.21:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.58:1 |
| White text | 13.21:1 |
Values
| HEX | #04334E |
| RGB | rgb(4, 51, 78) |
| HSL | hsl(202, 90%, 16%) |
| OKLCH | oklch(30.7% 0.068 240.6) |
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 #04334E | 13.21:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #04334E | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #04334E text on white | 13.21:1 | AAA | Lc 99.2 | Preferred for body text |
| #04334E text on black | 1.58:1 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#C0DEF4
oklch(88.6% 0.044 239.8)
-
Step 300
300
#91C8F0
oklch(80.9% 0.081 240.6)
-
Step 400
400
#4AAAE8
oklch(70.7% 0.128 240.4)
-
Step 500
500
#0092D8
oklch(63% 0.146 240.6)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950 (this color)
#04334E
oklch(30.7% 0.068 240.6)
#04334E 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) | #26344F | 0.034 |
| Deuteranopia (no green cones) | #1C2D4E | 0.026 |
| Tritanopia (no blue cones) | #003A3D | 0.045 |
| Achromatopsia (no color) | #303030 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04334E
#04334E
oklch(30.7% 0.068 240.6)
- #472604
#472604
oklch(30.6% 0.067 60.8)
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 #04334E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Midnight Green #073B4C ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.038
- Marine #042E60 ΔE 0.039
- Gunmetal #293241 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.050
- Marine Blue #01386A ΔE 0.050
Use #04334E 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.