#1D254B
Closest named color: Oxford Blue (#1B263B). oklch(27.9% 0.071 272.2), rgb(29, 37, 75).
Aa
White text reads best on this color (14.80:1).
About this color
#1D254B is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.071 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 14.80:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.80:1 |
Values
| HEX | #1D254B |
| RGB | rgb(29, 37, 75) |
| HSL | hsl(230, 44%, 20%) |
| OKLCH | oklch(27.9% 0.071 272.2) |
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 #1D254B | 14.80:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #1D254B | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #1D254B text on white | 14.80:1 | AAA | Lc 101.5 | Preferred for body text |
| #1D254B text on black | 1.41:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F9
oklch(88.5% 0.047 272.1)
-
Step 300
300
#AEBEF7
oklch(80.9% 0.083 272.3)
-
Step 400
400
#849AF4
oklch(70.7% 0.134 272.2)
-
Step 500
500
#677EEF
oklch(63.1% 0.17 272)
-
Step 600
600
#5164DE
oklch(55.6% 0.186 272.2)
-
Step 700
700
#4252C1
oklch(49.1% 0.173 272.2)
-
Step 800
800
#36449C
oklch(42.7% 0.143 272.1)
-
Step 900
900
#2E3A7C
oklch(37.6% 0.112 272.2)
-
Step 950
950 (this color)
#1D254B
oklch(27.9% 0.071 272.2)
#1D254B 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) | #142A4C | 0.018 |
| Deuteranopia (no green cones) | #0E264A | 0.019 |
| Tritanopia (no blue cones) | #052D34 | 0.062 |
| Achromatopsia (no color) | #282828 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D254B
#1D254B
oklch(27.9% 0.071 272.2)
- #332700
#332700
oklch(27.9% 0.057 91)
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 #1D254B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.042
- Marine #042E60 ΔE 0.046
- Dark #1B2431 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.052
- Gunmetal #293241 ΔE 0.055
- Jet #212529 ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.069
Use #1D254B 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.