#1E243D
Closest named color: Oxford Blue (#1B263B). oklch(26.8% 0.048 272.6), rgb(30, 36, 61).
Aa
White text reads best on this color (15.27:1).
About this color
#1E243D is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.048 and its hue 273°. 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 15.27:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.27:1 |
Values
| HEX | #1E243D |
| RGB | rgb(30, 36, 61) |
| HSL | hsl(228, 34%, 18%) |
| OKLCH | oklch(26.8% 0.048 272.6) |
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 #1E243D | 15.27:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #1E243D | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #1E243D text on white | 15.27:1 | AAA | Lc 102.1 | Preferred for body text |
| #1E243D text on black | 1.37:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B4BFE6
oklch(80.9% 0.056 272.7)
-
Step 400
400
#8D9DD9
oklch(70.6% 0.09 272.4)
-
Step 500
500
#7284CF
oklch(63.1% 0.115 272.5)
-
Step 600
600
#5B6CBC
oklch(55.5% 0.126 272.7)
-
Step 700
700
#4B5AA2
oklch(49.1% 0.116 272.6)
-
Step 800
800
#3E4A83
oklch(42.7% 0.095 272.8)
-
Step 900
900
#343E69
oklch(37.6% 0.075 272.4)
-
Step 950
950 (this color)
#1E243D
oklch(26.8% 0.048 272.6)
#1E243D 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) | #1B273E | 0.010 |
| Deuteranopia (no green cones) | #18243C | 0.010 |
| Tritanopia (no blue cones) | #13292D | 0.043 |
| Achromatopsia (no color) | #252525 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E243D
#1E243D
oklch(26.8% 0.048 272.6)
- #2E2506
#2E2506
oklch(26.8% 0.048 92.6)
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 #1E243D, 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 0.024
- Space Cadet #2B2D42 ΔE 0.039
- Jet #212529 ΔE 0.039
- Gunmetal #293241 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.065
- Marine #042E60 ΔE 0.068
Use #1E243D 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.