#20509F
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.139 259.9), rgb(32, 80, 159).
Aa
White text reads best on this color (7.75:1).
About this color
#20509F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.139 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.032 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #20509F |
| RGB | rgb(32, 80, 159) |
| HSL | hsl(217, 66%, 37%) |
| OKLCH | oklch(44.5% 0.139 259.9) |
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 #20509F | 7.75:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #20509F | 2.70:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #20509F text on white | 7.75:1 | AAA | Lc 86.5 | Fine for body text |
| #20509F text on black | 2.70:1 | Fails | Lc -15.6 | 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
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A2C2F6
oklch(80.9% 0.082 260)
-
Step 400
400
#70A1F1
oklch(70.8% 0.129 259.8)
-
Step 500
500
#4986EC
oklch(63% 0.166 260.1)
-
Step 600
600
#2B6DDA
oklch(55.5% 0.18 260)
-
Step 700
700
#1E5BBD
oklch(49.1% 0.167 259.8)
-
Step 800
800 (this color)
#20509F
oklch(44.5% 0.139 259.9)
-
Step 900
900
#1C3F7A
oklch(37.7% 0.109 260.2)
-
Step 950
950
#112647
oklch(27.1% 0.067 259.1)
#20509F 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) | #2259A2 | 0.025 |
| Deuteranopia (no green cones) | #004D9D | 0.019 |
| Tritanopia (no blue cones) | #006370 | 0.107 |
| Achromatopsia (no color) | #535353 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20509F
#20509F
oklch(44.5% 0.139 259.9)
- #6E4D00
#6E4D00
oklch(44.5% 0.092 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 #20509F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.032
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.054
- Blueberry #464196 ΔE 0.054
- Twilight #4E518B ΔE 0.062
Use #20509F 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.