#004372
Closest named color: Twilight Blue (#0A437A). oklch(37.3% 0.1 247.6), rgb(0, 67, 114).
Aa
White text reads best on this color (10.26:1).
About this color
#004372 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.100 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.015 away. White text reads best on it, at 10.26:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.04:1 |
| White text | 10.26:1 |
Values
| HEX | #004372 |
| RGB | rgb(0, 67, 114) |
| HSL | hsl(205, 100%, 22%) |
| OKLCH | oklch(37.3% 0.1 247.6) |
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 #004372 | 10.26:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #004372 | 2.04:1 | Fails | Lc 10.7 | Not readable |
| #004372 text on white | 10.26:1 | AAA | Lc 93.3 | Preferred for body text |
| #004372 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF8
oklch(93.7% 0.021 245.9)
-
Step 200
200
#C4DCF4
oklch(88.4% 0.042 248.3)
-
Step 300
300
#9AC6EF
oklch(81% 0.075 247)
-
Step 400
400
#5FA6E7
oklch(70.6% 0.12 247.9)
-
Step 500
500
#268EE0
oklch(63% 0.153 247.8)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900 (this color)
#004372
oklch(37.3% 0.1 247.6)
-
Step 950
950
#072843
oklch(26.9% 0.063 247.7)
#004372 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) | #2B4674 | 0.034 |
| Deuteranopia (no green cones) | #193C71 | 0.023 |
| Tritanopia (no blue cones) | #004E55 | 0.069 |
| Achromatopsia (no color) | #414141 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004372
#004372
oklch(37.3% 0.1 247.6)
- #5D3700
#5D3700
oklch(37.5% 0.082 67.8)
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 #004372, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.015
- Marine Blue #01386A ΔE 0.035
- Light Navy #155084 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.051
- Cobalt #1E488F ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.057
- Charcoal #264653 ΔE 0.061
Use #004372 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.