#023C7C
Closest named color: Twilight Blue (#0A437A). oklch(36.4% 0.122 255.9), rgb(2, 60, 124).
Aa
White text reads best on this color (10.82:1).
About this color
#023C7C is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.122 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 10.82:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.93:1 |
| White text | 10.82:1 |
Values
| HEX | #023C7C |
| RGB | rgb(2, 60, 124) |
| HSL | hsl(211, 97%, 25%) |
| OKLCH | oklch(36.4% 0.122 255.9) |
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 #023C7C | 10.82:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #023C7C | 1.93:1 | Fails | Lc 9.5 | Not readable |
| #023C7C text on white | 10.82:1 | AAA | Lc 94.4 | Preferred for body text |
| #023C7C text on black | 1.93:1 | Fails | Lc -8.1 | 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
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFB
oklch(88.5% 0.051 256.7)
-
Step 300
300
#9AC3FB
oklch(80.8% 0.091 256.3)
-
Step 400
400
#5FA2FA
oklch(70.7% 0.147 255.9)
-
Step 500
500
#2C88F7
oklch(63.2% 0.186 255.8)
-
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)
#023C7C
oklch(36.4% 0.122 255.9)
-
Step 950
950
#08264B
oklch(27% 0.077 255.8)
#023C7C 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) | #13437E | 0.024 |
| Deuteranopia (no green cones) | #00387B | 0.012 |
| Tritanopia (no blue cones) | #004C56 | 0.091 |
| Achromatopsia (no color) | #3D3D3D | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #023C7C
#023C7C
oklch(36.4% 0.122 255.9)
- #553700
#553700
oklch(36.3% 0.077 75.1)
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 #023C7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Marine Blue #01386A ΔE 0.032
- Cobalt #1E488F ΔE 0.051
- Marine #042E60 ΔE 0.061
- Light Navy #155084 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.065
- Deep Sea Blue #015482 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.076
Use #023C7C 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.