#1C253F
Closest named color: Oxford Blue (#1B263B). oklch(27% 0.05 268.4), rgb(28, 37, 63).
Aa
White text reads best on this color (15.15:1).
About this color
#1C253F is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.050 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.009 away. White text reads best on it, at 15.15:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.15:1 |
Values
| HEX | #1C253F |
| RGB | rgb(28, 37, 63) |
| HSL | hsl(225, 38%, 18%) |
| OKLCH | oklch(27% 0.05 268.4) |
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 #1C253F | 15.15:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #1C253F | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #1C253F text on white | 15.15:1 | AAA | Lc 102.0 | Preferred for body text |
| #1C253F text on black | 1.38:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#879EDD
oklch(70.6% 0.096 268.5)
-
Step 500
500
#6A85D3
oklch(63% 0.122 268.3)
-
Step 600
600
#536EC0
oklch(55.7% 0.131 268.2)
-
Step 700
700
#435BA6
oklch(49% 0.123 268.3)
-
Step 800
800
#384B86
oklch(42.8% 0.101 268.5)
-
Step 900
900
#303F6C
oklch(37.8% 0.08 268.5)
-
Step 950
950 (this color)
#1C253F
oklch(27% 0.05 268.4)
#1C253F 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) | #1B2840 | 0.010 |
| Deuteranopia (no green cones) | #18243E | 0.007 |
| Tritanopia (no blue cones) | #0E2A2F | 0.043 |
| Achromatopsia (no color) | #262626 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C253F
#1C253F
oklch(27% 0.05 268.4)
- #302504
#302504
oklch(27% 0.051 90)
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 #1C253F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.009
- Dark #1B2431 ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.038
- Jet #212529 ΔE 0.042
- Gunmetal #293241 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.061
- Marine #042E60 ΔE 0.063
Use #1C253F 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.