#204D99
Closest named color: Cobalt (#1E488F). oklch(43.4% 0.134 260.3), rgb(32, 77, 153).
Aa
White text reads best on this color (8.13:1).
About this color
#204D99 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.134 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.58:1 |
| White text | 8.13:1 |
Values
| HEX | #204D99 |
| RGB | rgb(32, 77, 153) |
| HSL | hsl(218, 65%, 36%) |
| OKLCH | oklch(43.4% 0.134 260.3) |
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 #204D99 | 8.13:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #204D99 | 2.58:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #204D99 text on white | 8.13:1 | AAA | Lc 87.7 | Fine for body text |
| #204D99 text on black | 2.58:1 | Fails | Lc -14.4 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C2F4
oklch(81% 0.078 260.5)
-
Step 400
400
#72A1EE
oklch(70.8% 0.124 259.9)
-
Step 500
500
#4D87E9
oklch(63.2% 0.16 260.2)
-
Step 600
600
#306ED7
oklch(55.6% 0.174 260.3)
-
Step 700
700
#225BBB
oklch(49.1% 0.163 260.3)
-
Step 800
800 (this color)
#204D99
oklch(43.4% 0.134 260.3)
-
Step 900
900
#1E3F78
oklch(37.6% 0.105 260.5)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#204D99 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) | #21559C | 0.023 |
| Deuteranopia (no green cones) | #004A97 | 0.020 |
| Tritanopia (no blue cones) | #005F6B | 0.104 |
| Achromatopsia (no color) | #4F4F4F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204D99
#204D99
oklch(43.4% 0.134 260.3)
- #6A4A00
#6A4A00
oklch(43.3% 0.09 80.2)
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 #204D99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Dusk Blue #26538D ΔE 0.029
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
- Sapphire #2138AB ΔE 0.060
Use #204D99 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.