#05273E
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.057 243.2), rgb(5, 39, 62).
Aa
White text reads best on this color (15.37:1).
About this color
#05273E is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.057 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.024 away. White text reads best on it, at 15.37:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.37:1 |
Values
| HEX | #05273E |
| RGB | rgb(5, 39, 62) |
| HSL | hsl(204, 85%, 13%) |
| OKLCH | oklch(26.2% 0.057 243.2) |
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 #05273E | 15.37:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #05273E | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #05273E text on white | 15.37:1 | AAA | Lc 102.1 | Preferred for body text |
| #05273E text on black | 1.36:1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDF1
oklch(88.6% 0.038 243.3)
-
Step 300
300
#9BC6EA
oklch(80.8% 0.069 244)
-
Step 400
400
#60A8DF
oklch(70.7% 0.109 243.2)
-
Step 500
500
#2791D6
oklch(63.1% 0.139 243.1)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#01456D
oklch(37.5% 0.091 243.3)
-
Step 950
950 (this color)
#05273E
oklch(26.2% 0.057 243.2)
#05273E 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) | #1C283F | 0.026 |
| Deuteranopia (no green cones) | #14223E | 0.021 |
| Tritanopia (no blue cones) | #002D2F | 0.041 |
| Achromatopsia (no color) | #252525 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05273E
#05273E
oklch(26.2% 0.057 243.2)
- #381D02
#381D02
oklch(26.2% 0.058 61.7)
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 #05273E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.024
- Dark #1B2431 ΔE 0.032
- Jet #212529 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.061
- Marine #042E60 ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.068
Use #05273E 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.