#023C60
Closest named color: Marine Blue (#01386A). oklch(34.3% 0.083 243.8), rgb(2, 60, 96).
Aa
White text reads best on this color (11.55:1).
About this color
#023C60 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.083 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.023 away. White text reads best on it, at 11.55:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #023C60 |
| RGB | rgb(2, 60, 96) |
| HSL | hsl(203, 96%, 19%) |
| OKLCH | oklch(34.3% 0.083 243.8) |
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 #023C60 | 11.55:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #023C60 | 1.81:1 | Fails | Lc 7.8 | Not readable |
| #023C60 text on white | 11.55:1 | AAA | Lc 96.1 | Preferred for body text |
| #023C60 text on black | 1.81:1 | Fails | Lc 0.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEF
oklch(88.5% 0.035 245.5)
-
Step 300
300
#9FC6E6
oklch(80.9% 0.062 243.3)
-
Step 400
400
#68A7DA
oklch(70.6% 0.099 244.3)
-
Step 500
500
#3890D0
oklch(63% 0.127 244.1)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900 (this color)
#023C60
oklch(34.3% 0.083 243.8)
-
Step 950
950
#0C293E
oklch(27.1% 0.052 243.5)
#023C60 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) | #2B3D62 | 0.036 |
| Deuteranopia (no green cones) | #1D355F | 0.026 |
| Tritanopia (no blue cones) | #004549 | 0.057 |
| Achromatopsia (no color) | #393939 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #023C60
#023C60
oklch(34.3% 0.083 243.8)
- #542E00
#542E00
oklch(34.2% 0.078 63.4)
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 #023C60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.028
- Midnight Green #073B4C ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.037
- Marine #042E60 ΔE 0.044
- Twilight Blue #0A437A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Charcoal #264653 ΔE 0.054
Use #023C60 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.