#004C81
Closest named color: Light Navy (#155084). oklch(40.7% 0.109 248), rgb(0, 76, 129).
Aa
White text reads best on this color (8.93:1).
About this color
#004C81 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.109 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.017 away. White text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #004C81 |
| RGB | rgb(0, 76, 129) |
| HSL | hsl(205, 100%, 25%) |
| OKLCH | oklch(40.7% 0.109 248) |
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 #004C81 | 8.93:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #004C81 | 2.35:1 | Fails | Lc 14.1 | Not readable |
| #004C81 text on white | 8.93:1 | AAA | Lc 89.9 | Fine for body text |
| #004C81 text on black | 2.35:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C7DCF0
oklch(88.5% 0.036 246.9)
-
Step 300
300
#A0C5E9
oklch(80.9% 0.065 247.9)
-
Step 400
400
#6BA6DD
oklch(70.7% 0.102 247.8)
-
Step 500
500
#3F8FD4
oklch(63.2% 0.13 247.7)
-
Step 600
600
#1477C1
oklch(55.5% 0.142 248)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800 (this color)
#004C81
oklch(40.7% 0.109 248)
-
Step 900
900
#14446C
oklch(37.6% 0.085 247.9)
-
Step 950
950
#0E283F
oklch(26.9% 0.054 248)
#004C81 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) | #314F83 | 0.036 |
| Deuteranopia (no green cones) | #1D4580 | 0.023 |
| Tritanopia (no blue cones) | #005960 | 0.078 |
| Achromatopsia (no color) | #494949 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004C81
#004C81
oklch(40.7% 0.109 248)
- #683F00
#683F00
oklch(40.7% 0.089 68.9)
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 #004C81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.017
- Deep Sea Blue #015482 ΔE 0.025
- Twilight Blue #0A437A ΔE 0.027
- Cobalt #1E488F ΔE 0.031
- Dusk Blue #26538D ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.065
- Marine Blue #01386A ΔE 0.068
Use #004C81 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.