#02436E
Closest named color: Twilight Blue (#0A437A). oklch(37.1% 0.094 245.9), rgb(2, 67, 110).
Aa
White text reads best on this color (10.34:1).
About this color
#02436E is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.094 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.021 away. White text reads best on it, at 10.34:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.03:1 |
| White text | 10.34:1 |
Values
| HEX | #02436E |
| RGB | rgb(2, 67, 110) |
| HSL | hsl(204, 96%, 22%) |
| OKLCH | oklch(37.1% 0.094 245.9) |
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 #02436E | 10.34:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #02436E | 2.03:1 | Fails | Lc 10.4 | Not readable |
| #02436E text on white | 10.34:1 | AAA | Lc 93.5 | Preferred for body text |
| #02436E text on black | 2.03:1 | Fails | Lc -9.0 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF2
oklch(88.4% 0.039 247.1)
-
Step 300
300
#9BC6EC
oklch(80.9% 0.071 245.5)
-
Step 400
400
#61A7E2
oklch(70.7% 0.112 245.7)
-
Step 500
500
#2B90DA
oklch(63.2% 0.143 245.6)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900 (this color)
#02436E
oklch(37.1% 0.094 245.9)
-
Step 950
950
#082941
oklch(27.1% 0.058 244.7)
#02436E 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) | #2E4570 | 0.036 |
| Deuteranopia (no green cones) | #1E3C6D | 0.025 |
| Tritanopia (no blue cones) | #004E53 | 0.067 |
| Achromatopsia (no color) | #404040 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02436E
#02436E
oklch(37.1% 0.094 245.9)
- #5D3500
#5D3500
oklch(37% 0.083 65.3)
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 #02436E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.021
- Marine Blue #01386A ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.053
- Light Navy #155084 ΔE 0.053
- Charcoal #264653 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #02436E 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.