#023D55
Closest named color: Midnight Green (#073B4C). oklch(33.9% 0.069 232.8), rgb(2, 61, 85).
Aa
White text reads best on this color (11.65:1).
About this color
#023D55 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.069 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.016 away. White text reads best on it, at 11.65:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #023D55 |
| RGB | rgb(2, 61, 85) |
| HSL | hsl(197, 95%, 17%) |
| OKLCH | oklch(33.9% 0.069 232.8) |
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 #023D55 | 11.65:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #023D55 | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #023D55 text on white | 11.65:1 | AAA | Lc 96.4 | Preferred for body text |
| #023D55 text on black | 1.80:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DD
oklch(80.9% 0.052 233)
-
Step 400
400
#6AAACC
oklch(70.8% 0.082 232.8)
-
Step 500
500
#3B94BE
oklch(63.1% 0.105 232.4)
-
Step 600
600
#017DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900 (this color)
#023D55
oklch(33.9% 0.069 232.8)
-
Step 950
950
#0D2A38
oklch(27% 0.043 232.5)
#023D55 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) | #313C56 | 0.044 |
| Deuteranopia (no green cones) | #263555 | 0.037 |
| Tritanopia (no blue cones) | #004345 | 0.040 |
| Achromatopsia (no color) | #383838 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #023D55
#023D55
oklch(33.9% 0.069 232.8)
- #532C12
#532C12
oklch(33.9% 0.069 51.8)
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 #023D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.031
- Marine Blue #01386A ΔE 0.044
- Charcoal #264653 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.047
- Gunmetal #293241 ΔE 0.050
- Marine #042E60 ΔE 0.056
Use #023D55 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.