#1D273E
Closest named color: Oxford Blue (#1B263B). oklch(27.5% 0.045 265.6), rgb(29, 39, 62).
Aa
White text reads best on this color (14.87:1).
About this color
#1D273E is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.045 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.007 away. White text reads best on it, at 14.87:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.87:1 |
Values
| HEX | #1D273E |
| RGB | rgb(29, 39, 62) |
| HSL | hsl(222, 36%, 18%) |
| OKLCH | oklch(27.5% 0.045 265.6) |
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 #1D273E | 14.87:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #1D273E | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #1D273E text on white | 14.87:1 | AAA | Lc 101.7 | Preferred for body text |
| #1D273E 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B0C1E4
oklch(81% 0.053 264.7)
-
Step 400
400
#87A0D7
oklch(70.8% 0.086 265.4)
-
Step 500
500
#6A87CC
oklch(63.1% 0.11 266)
-
Step 600
600
#5270B9
oklch(55.6% 0.119 265.8)
-
Step 700
700
#425D9F
oklch(49% 0.111 265.7)
-
Step 800
800
#374D81
oklch(42.8% 0.091 265.4)
-
Step 900
900
#2F4068
oklch(37.7% 0.072 265.6)
-
Step 950
950 (this color)
#1D273E
oklch(27.5% 0.045 265.6)
#1D273E 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) | #1F293F | 0.008 |
| Deuteranopia (no green cones) | #1B263D | 0.005 |
| Tritanopia (no blue cones) | #102C2F | 0.041 |
| Achromatopsia (no color) | #272727 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D273E
#1D273E
oklch(27.5% 0.045 265.6)
- #32260A
#32260A
oklch(27.6% 0.046 85.5)
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 #1D273E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.007
- Dark #1B2431 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.032
- Jet #212529 ΔE 0.039
- Gunmetal #293241 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.059
- Marine #042E60 ΔE 0.064
Use #1D273E 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.