#1E234C
Closest named color: Oxford Blue (#1B263B). oklch(27.6% 0.075 275.1), rgb(30, 35, 76).
Aa
White text reads best on this color (15.00:1).
About this color
#1E234C is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.075 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 15.00:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.00:1 |
Values
| HEX | #1E234C |
| RGB | rgb(30, 35, 76) |
| HSL | hsl(233, 43%, 21%) |
| OKLCH | oklch(27.6% 0.075 275.1) |
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 #1E234C | 15.00:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #1E234C | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #1E234C text on white | 15.00:1 | AAA | Lc 101.7 | Preferred for body text |
| #1E234C text on black | 1.39:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CFD7FB
oklch(88.5% 0.05 275.4)
-
Step 300
300
#B0BDFA
oklch(81% 0.088 275)
-
Step 400
400
#8897F8
oklch(70.6% 0.142 275.5)
-
Step 500
500
#6D7AF5
oklch(63.1% 0.182 275.4)
-
Step 600
600
#5760E4
oklch(55.7% 0.197 275)
-
Step 700
700
#484EC6
oklch(49.2% 0.183 275.2)
-
Step 800
800
#3B41A0
oklch(42.8% 0.151 275.2)
-
Step 900
900
#31387F
oklch(37.7% 0.119 274.9)
-
Step 950
950 (this color)
#1E234C
oklch(27.6% 0.075 275.1)
#1E234C 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) | #0F294D | 0.024 |
| Deuteranopia (no green cones) | #09254B | 0.025 |
| Tritanopia (no blue cones) | #072C33 | 0.067 |
| Achromatopsia (no color) | #272727 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E234C
#1E234C
oklch(27.6% 0.075 275.1)
- #312700
#312700
oklch(27.6% 0.057 94.2)
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 #1E234C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.047
- Marine #042E60 ΔE 0.049
- Dark #1B2431 ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.057
- Gunmetal #293241 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.062
- Jet #212529 ΔE 0.068
Use #1E234C 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.