#204EA3
Closest named color: Cobalt (#1E488F). oklch(44.3% 0.147 261.3), rgb(32, 78, 163).
Aa
White text reads best on this color (7.83:1).
About this color
#204EA3 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.147 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 7.83:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.68:1 |
| White text | 7.83:1 |
Values
| HEX | #204EA3 |
| RGB | rgb(32, 78, 163) |
| HSL | hsl(219, 67%, 38%) |
| OKLCH | oklch(44.3% 0.147 261.3) |
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 #204EA3 | 7.83:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #204EA3 | 2.68:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #204EA3 text on white | 7.83:1 | AAA | Lc 86.7 | Fine for body text |
| #204EA3 text on black | 2.68:1 | Fails | Lc -15.4 | 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
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F9
oklch(81% 0.086 261.1)
-
Step 400
400
#6F9FF6
oklch(70.6% 0.138 261.6)
-
Step 500
500
#4985F2
oklch(63.2% 0.175 261.2)
-
Step 600
600
#2C6BE0
oklch(55.5% 0.19 261.4)
-
Step 700
700
#1F59C3
oklch(49.2% 0.177 261.3)
-
Step 800
800 (this color)
#204EA3
oklch(44.3% 0.147 261.3)
-
Step 900
900
#1C3E7D
oklch(37.6% 0.114 261.4)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#204EA3 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) | #1558A6 | 0.027 |
| Deuteranopia (no green cones) | #004CA1 | 0.018 |
| Tritanopia (no blue cones) | #006371 | 0.114 |
| Achromatopsia (no color) | #525252 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204EA3
#204EA3
oklch(44.3% 0.147 261.3)
- #6D4D00
#6D4D00
oklch(44.3% 0.092 81.1)
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 #204EA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Dusk Blue #26538D ΔE 0.041
- Blueberry #464196 ΔE 0.053
- Light Navy #155084 ΔE 0.053
- Sapphire #2138AB ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.062
Use #204EA3 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.