#004276
Closest named color: Twilight Blue (#0A437A). oklch(37.4% 0.106 250.2), rgb(0, 66, 118).
Aa
White text reads best on this color (10.28:1).
About this color
#004276 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.106 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.009 away. White text reads best on it, at 10.28:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #004276 |
| RGB | rgb(0, 66, 118) |
| HSL | hsl(206, 100%, 23%) |
| OKLCH | oklch(37.4% 0.106 250.2) |
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 #004276 | 10.28:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #004276 | 2.04:1 | Fails | Lc 10.6 | Not readable |
| #004276 text on white | 10.28:1 | AAA | Lc 93.3 | Preferred for body text |
| #004276 text on black | 2.04:1 | Fails | Lc -9.2 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9AC5F3
oklch(80.9% 0.08 250.5)
-
Step 400
400
#5EA5ED
oklch(70.6% 0.128 250.4)
-
Step 500
500
#258DE7
oklch(63.2% 0.163 250)
-
Step 600
600
#0076CB
oklch(55.7% 0.158 250)
-
Step 700
700
#0063AC
oklch(49.2% 0.139 250)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900 (this color)
#004276
oklch(37.4% 0.106 250.2)
-
Step 950
950
#072846
oklch(27.2% 0.067 250.1)
#004276 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) | #274678 | 0.031 |
| Deuteranopia (no green cones) | #113C75 | 0.018 |
| Tritanopia (no blue cones) | #004F56 | 0.077 |
| Achromatopsia (no color) | #404040 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004276
#004276
oklch(37.4% 0.106 250.2)
- #5B3800
#5B3800
oklch(37.4% 0.081 70.8)
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 #004276, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.009
- Marine Blue #01386A ΔE 0.035
- Light Navy #155084 ΔE 0.049
- Cobalt #1E488F ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.061
- Marine #042E60 ΔE 0.068
Use #004276 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.