#04529E
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.14 254.5), rgb(4, 82, 158).
Aa
White text reads best on this color (7.76:1).
About this color
#04529E is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.140 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.033 away. White text reads best on it, at 7.76:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.76:1 |
Values
| HEX | #04529E |
| RGB | rgb(4, 82, 158) |
| HSL | hsl(210, 95%, 32%) |
| OKLCH | oklch(44.3% 0.14 254.5) |
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 #04529E | 7.76:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #04529E | 2.70:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #04529E text on white | 7.76:1 | AAA | Lc 86.3 | Fine for body text |
| #04529E text on black | 2.70:1 | Fails | Lc -15.8 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF7
oklch(88.4% 0.045 254.5)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#64A3F1
oklch(70.7% 0.132 254.6)
-
Step 500
500
#358AEC
oklch(63.2% 0.168 254.5)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800 (this color)
#04529E
oklch(44.3% 0.14 254.5)
-
Step 900
900
#0E417A
oklch(37.7% 0.11 254.8)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#04529E 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) | #2659A1 | 0.030 |
| Deuteranopia (no green cones) | #004D9D | 0.014 |
| Tritanopia (no blue cones) | #006570 | 0.106 |
| Achromatopsia (no color) | #525252 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04529E
#04529E
oklch(44.3% 0.14 254.5)
- #714A00
#714A00
oklch(44.2% 0.093 74.5)
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 #04529E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.033
- Cobalt #1E488F ΔE 0.035
- Light Navy #155084 ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
- Peacock Blue #016795 ΔE 0.066
- Blueberry #464196 ΔE 0.067
Use #04529E 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.