#002F51
Closest named color: Marine (#042E60). oklch(29.7% 0.077 246.7), rgb(0, 47, 81).
Aa
White text reads best on this color (13.76:1).
About this color
#002F51 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.077 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.028 away. White text reads best on it, at 13.76:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.52:1 |
| White text | 13.76:1 |
Values
| HEX | #002F51 |
| RGB | rgb(0, 47, 81) |
| HSL | hsl(205, 100%, 16%) |
| OKLCH | oklch(29.7% 0.077 246.7) |
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 #002F51 | 13.76:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #002F51 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #002F51 text on white | 13.76:1 | AAA | Lc 99.9 | Preferred for body text |
| #002F51 text on black | 1.52:1 | 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
#EFF6FD
oklch(97% 0.012 248)
-
Step 100
100
#DCECFB
oklch(93.6% 0.027 246.3)
-
Step 200
200
#BFDDFA
oklch(88.5% 0.051 247.5)
-
Step 300
300
#90C7F9
oklch(81% 0.091 246.6)
-
Step 400
400
#47A7F6
oklch(70.7% 0.147 246.8)
-
Step 500
500
#008FE6
oklch(63.1% 0.164 246.6)
-
Step 600
600
#0078C2
oklch(55.6% 0.145 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#004472
oklch(37.6% 0.099 246.8)
-
Step 950
950 (this color)
#002F51
oklch(29.7% 0.077 246.7)
#002F51 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) | #1E3152 | 0.028 |
| Deuteranopia (no green cones) | #112A50 | 0.018 |
| Tritanopia (no blue cones) | #00373C | 0.053 |
| Achromatopsia (no color) | #2D2D2D | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #002F51
#002F51
oklch(29.7% 0.077 246.7)
- #422500
#422500
oklch(29.6% 0.065 66.8)
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 #002F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.035
- Midnight Green #073B4C ΔE 0.045
- Oxford Blue #1B263B ΔE 0.047
- Marine Blue #01386A ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.053
Use #002F51 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.