#023E81
Closest named color: Twilight Blue (#0A437A). oklch(37.3% 0.126 256.2), rgb(2, 62, 129).
Aa
White text reads best on this color (10.45:1).
About this color
#023E81 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.126 and its hue 256°. 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 10.45:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #023E81 |
| RGB | rgb(2, 62, 129) |
| HSL | hsl(212, 97%, 26%) |
| OKLCH | oklch(37.3% 0.126 256.2) |
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 #023E81 | 10.45:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #023E81 | 2.00:1 | Fails | Lc 10.3 | Not readable |
| #023E81 text on white | 10.45:1 | AAA | Lc 93.6 | Preferred for body text |
| #023E81 text on black | 2.00:1 | Fails | Lc -8.9 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C3DBFC
oklch(88.4% 0.052 256.4)
-
Step 300
300
#99C3FD
oklch(80.8% 0.094 256.6)
-
Step 400
400
#5DA2FD
oklch(70.8% 0.151 256)
-
Step 500
500
#2787FB
oklch(63.2% 0.193 256.1)
-
Step 600
600
#006FDF
oklch(55.6% 0.191 256.1)
-
Step 700
700
#005DBD
oklch(49.1% 0.169 256.1)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900 (this color)
#023E81
oklch(37.3% 0.126 256.2)
-
Step 950
950
#07264C
oklch(27.1% 0.079 255.8)
#023E81 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) | #114583 | 0.023 |
| Deuteranopia (no green cones) | #003A80 | 0.012 |
| Tritanopia (no blue cones) | #004F59 | 0.096 |
| Achromatopsia (no color) | #3F3F3F | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #023E81
#023E81
oklch(37.3% 0.126 256.2)
- #583A00
#583A00
oklch(37.4% 0.078 76.3)
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 #023E81, 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 0.042
- Cobalt #1E488F ΔE 0.042
- Light Navy #155084 ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.066
- Dusk Blue #26538D ΔE 0.071
- Marine #042E60 ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.074
Use #023E81 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.