#20436E
Closest named color: Twilight Blue (#0A437A). oklch(38% 0.084 254.8), rgb(32, 67, 110).
Aa
White text reads best on this color (10.05:1).
About this color
#20436E is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.084 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.024 away. White text reads best on it, at 10.05:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #20436E |
| RGB | rgb(32, 67, 110) |
| HSL | hsl(213, 55%, 28%) |
| OKLCH | oklch(38% 0.084 254.8) |
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 #20436E | 10.05:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #20436E | 2.08:1 | Fails | Lc 10.8 | Not readable |
| #20436E text on white | 10.05:1 | AAA | Lc 93.1 | Preferred for body text |
| #20436E text on black | 2.08:1 | Fails | Lc -9.4 | 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 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A5C3EA
oklch(80.8% 0.064 255.1)
-
Step 400
400
#75A3DF
oklch(70.6% 0.102 255.4)
-
Step 500
500
#4F8BD6
oklch(63% 0.13 255)
-
Step 600
600
#3174C3
oklch(55.6% 0.14 254.6)
-
Step 700
700
#2461A9
oklch(49.2% 0.131 254.9)
-
Step 800
800
#1F4F89
oklch(42.6% 0.109 255)
-
Step 900
900 (this color)
#20436E
oklch(38% 0.084 254.8)
-
Step 950
950
#132740
oklch(27% 0.054 254.9)
#20436E 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) | #304670 | 0.022 |
| Deuteranopia (no green cones) | #243F6D | 0.012 |
| Tritanopia (no blue cones) | #004D53 | 0.067 |
| Achromatopsia (no color) | #424242 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20436E
#20436E
oklch(38% 0.084 254.8)
- #5B3B00
#5B3B00
oklch(38% 0.08 74.8)
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 #20436E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Dark Grey Blue #29465B ΔE 0.038
- Marine Blue #01386A ΔE 0.044
- Light Navy #155084 ΔE 0.048
- Charcoal #264653 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.055
- Cobalt #1E488F ΔE 0.056
Use #20436E 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.