#20537C
Closest named color: Deep Sea Blue (#015482). oklch(42.8% 0.087 246.2), rgb(32, 83, 124).
Aa
White text reads best on this color (8.10:1).
About this color
#20537C is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.087 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.016 away. White text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.58:1 |
| White text | 8.10:1 |
Values
| HEX | #20537C |
| RGB | rgb(32, 83, 124) |
| HSL | hsl(207, 59%, 31%) |
| OKLCH | oklch(42.8% 0.087 246.2) |
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 #20537C | 8.10:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #20537C | 2.58:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #20537C text on white | 8.10:1 | AAA | Lc 87.8 | Fine for body text |
| #20537C text on black | 2.58:1 | Fails | Lc -14.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A6C5E0
oklch(81% 0.051 244.8)
-
Step 400
400
#76A6D1
oklch(70.7% 0.082 246.3)
-
Step 500
500
#508FC5
oklch(63.1% 0.105 246.3)
-
Step 600
600
#3278B1
oklch(55.5% 0.113 246.4)
-
Step 700
700
#246598
oklch(49.1% 0.104 246.1)
-
Step 800
800 (this color)
#20537C
oklch(42.8% 0.087 246.2)
-
Step 900
900
#204563
oklch(37.8% 0.067 245.4)
-
Step 950
950
#13283A
oklch(26.9% 0.043 246.2)
#20537C 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) | #40547E | 0.035 |
| Deuteranopia (no green cones) | #344C7B | 0.026 |
| Tritanopia (no blue cones) | #005D62 | 0.063 |
| Achromatopsia (no color) | #505050 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20537C
#20537C
oklch(42.8% 0.087 246.2)
- #6F440F
#6F440F
oklch(42.8% 0.087 65.9)
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 #20537C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.016
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.045
- Cobalt #1E488F ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
Use #20537C 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.