#022F5B
Closest named color: Marine (#042E60). oklch(30.5% 0.091 252.9), rgb(2, 47, 91).
Aa
White text reads best on this color (13.45:1).
About this color
#022F5B is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.091 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.010 away. White text reads best on it, at 13.45:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.56:1 |
| White text | 13.45:1 |
Values
| HEX | #022F5B |
| RGB | rgb(2, 47, 91) |
| HSL | hsl(210, 96%, 18%) |
| OKLCH | oklch(30.5% 0.091 252.9) |
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 #022F5B | 13.45:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #022F5B | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #022F5B text on white | 13.45:1 | AAA | Lc 99.5 | Preferred for body text |
| #022F5B text on black | 1.56:1 | 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 950.
-
Step 50
50
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DCECFF
oklch(93.7% 0.031 252.7)
-
Step 200
200
#BFDCFF
oklch(88.5% 0.058 253.3)
-
Step 300
300
#93C5FF
oklch(81% 0.098 252.7)
-
Step 400
400
#51A3FF
oklch(70.6% 0.157 253.2)
-
Step 500
500
#0089FA
oklch(63.1% 0.195 253)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417D
oklch(37.6% 0.117 253.3)
-
Step 950
950 (this color)
#022F5B
oklch(30.5% 0.091 252.9)
#022F5B 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) | #17335D | 0.022 |
| Deuteranopia (no green cones) | #032B5A | 0.012 |
| Tritanopia (no blue cones) | #003A40 | 0.068 |
| Achromatopsia (no color) | #2F2F2F | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #022F5B
#022F5B
oklch(30.5% 0.091 252.9)
- #422900
#422900
oklch(30.5% 0.065 73.8)
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 #022F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.010
- Prussian Blue #1D3557 ΔE 0.033
- Marine Blue #01386A ΔE 0.036
- Midnight Green #073B4C ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.061
- Gunmetal #293241 ΔE 0.063
Use #022F5B 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.