#00538E
Closest named color: Light Navy (#155084). oklch(43.3% 0.119 248.7), rgb(0, 83, 142).
Aa
White text reads best on this color (7.99:1).
About this color
#00538E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.119 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.018 away. White text reads best on it, at 7.99:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #00538E |
| RGB | rgb(0, 83, 142) |
| HSL | hsl(205, 100%, 28%) |
| OKLCH | oklch(43.3% 0.119 248.7) |
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 #00538E | 7.99:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #00538E | 2.62:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #00538E text on white | 7.99:1 | AAA | Lc 87.1 | Fine for body text |
| #00538E text on black | 2.62:1 | Fails | Lc -15.0 | Dividers and decoration only |
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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300
#9EC5EC
oklch(80.9% 0.069 248.7)
-
Step 400
400
#67A6E3
oklch(70.8% 0.111 248.9)
-
Step 500
500
#378EDB
oklch(63.1% 0.142 248.9)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800 (this color)
#00538E
oklch(43.3% 0.119 248.7)
-
Step 900
900
#0F4470
oklch(37.8% 0.092 248.7)
-
Step 950
950
#0B2842
oklch(27% 0.059 248.9)
#00538E 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) | #355790 | 0.038 |
| Deuteranopia (no green cones) | #1E4B8D | 0.024 |
| Tritanopia (no blue cones) | #006169 | 0.085 |
| Achromatopsia (no color) | #515151 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00538E
#00538E
oklch(43.3% 0.119 248.7)
- #724500
#724500
oklch(43.3% 0.095 68.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #00538E
These curated palettes and gradients contain exactly #00538E. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.018
- Dusk Blue #26538D ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.021
- Cobalt #1E488F ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.054
- Peacock Blue #016795 ΔE 0.060
Use #00538E 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.