#00274D
Closest named color: Marine (#042E60). oklch(27.2% 0.082 252.2), rgb(0, 39, 77).
Aa
White text reads best on this color (15.02:1).
About this color
#00274D is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.082 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.040 away. White text reads best on it, at 15.02:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.39:1 |
| White text | 15.02:1 |
Values
| HEX | #00274D |
| RGB | rgb(0, 39, 77) |
| HSL | hsl(210, 100%, 15%) |
| OKLCH | oklch(27.2% 0.082 252.2) |
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 #00274D | 15.02:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #00274D | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #00274D text on white | 15.02:1 | AAA | Lc 101.5 | Preferred for body text |
| #00274D text on black | 1.39:1 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DDECFD
oklch(93.7% 0.028 251.5)
-
Step 200
200
#C0DCFC
oklch(88.4% 0.053 251.9)
-
Step 300
300
#93C5FE
oklch(80.9% 0.097 252.2)
-
Step 400
400
#50A4FD
oklch(70.7% 0.154 252)
-
Step 500
500
#008AF7
oklch(63.1% 0.19 252.2)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950 (this color)
#00274D
oklch(27.2% 0.082 252.2)
#00274D 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) | #122A4E | 0.020 |
| Deuteranopia (no green cones) | #02234C | 0.012 |
| Tritanopia (no blue cones) | #003036 | 0.059 |
| Achromatopsia (no color) | #272727 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00274D
#00274D
oklch(27.2% 0.082 252.2)
- #382100
#382100
oklch(27.1% 0.058 71.5)
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 #00274D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.041
- Dark #1B2431 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.061
- Navy Blue #001146 ΔE 0.067
- Gunmetal #293241 ΔE 0.068
- Midnight Green #073B4C ΔE 0.069
Use #00274D 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.