#023E80
Closest named color: Twilight Blue (#0A437A). oklch(37.2% 0.125 256), rgb(2, 62, 128).
Aa
White text reads best on this color (10.48:1).
About this color
#023E80 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.125 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.020 away. White text reads best on it, at 10.48:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.48:1 |
Values
| HEX | #023E80 |
| RGB | rgb(2, 62, 128) |
| HSL | hsl(211, 97%, 25%) |
| OKLCH | oklch(37.2% 0.125 256) |
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 #023E80 | 10.48:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #023E80 | 2.00:1 | Fails | Lc 10.3 | Not readable |
| #023E80 text on white | 10.48:1 | AAA | Lc 93.7 | Preferred for body text |
| #023E80 text on black | 2.00:1 | Fails | Lc -8.8 | 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
#DEEBFC
oklch(93.5% 0.027 255.1)
-
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
#5EA2FC
oklch(70.8% 0.15 256.1)
-
Step 500
500
#2887F9
oklch(63.1% 0.191 256)
-
Step 600
600
#006FDE
oklch(55.5% 0.189 256)
-
Step 700
700
#005DBC
oklch(49% 0.167 256)
-
Step 800
800
#004C9C
oklch(42.7% 0.146 256)
-
Step 900
900 (this color)
#023E80
oklch(37.2% 0.125 256)
-
Step 950
950
#07264C
oklch(27.1% 0.079 255.8)
#023E80 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) | #134582 | 0.024 |
| Deuteranopia (no green cones) | #003A7F | 0.012 |
| Tritanopia (no blue cones) | #004E59 | 0.092 |
| Achromatopsia (no color) | #3F3F3F | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #023E80
#023E80
oklch(37.2% 0.125 256)
- #583900
#583900
oklch(37.2% 0.078 75)
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 #023E80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.020
- Marine Blue #01386A ΔE 0.041
- Cobalt #1E488F ΔE 0.043
- Light Navy #155084 ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.066
- Marine #042E60 ΔE 0.070
- Dusk Blue #26538D ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.072
Use #023E80 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.