#23183F
Closest named color: Oxford Blue (#1B263B). oklch(24.6% 0.072 293.5), rgb(35, 24, 63).
Aa
White text reads best on this color (16.48:1).
About this color
#23183F is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.072 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.047 away. White text reads best on it, at 16.48:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.48:1 |
Values
| HEX | #23183F |
| RGB | rgb(35, 24, 63) |
| HSL | hsl(257, 45%, 17%) |
| OKLCH | oklch(24.6% 0.072 293.5) |
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 #23183F | 16.48:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #23183F | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #23183F text on white | 16.48:1 | AAA | Lc 103.3 | Preferred for body text |
| #23183F text on black | 1.27:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C3B7F3
oklch(81% 0.085 293.6)
-
Step 400
400
#A58FED
oklch(70.8% 0.136 293.4)
-
Step 500
500
#9070E7
oklch(63.1% 0.173 293.2)
-
Step 600
600
#7C54D5
oklch(55.6% 0.189 293.6)
-
Step 700
700
#6944B8
oklch(49.1% 0.174 293.7)
-
Step 800
800
#553995
oklch(42.7% 0.144 293.4)
-
Step 900
900
#463277
oklch(37.7% 0.113 293.6)
-
Step 950
950 (this color)
#23183F
oklch(24.6% 0.072 293.5)
#23183F 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) | #071F40 | 0.044 |
| Deuteranopia (no green cones) | #091E3E | 0.042 |
| Tritanopia (no blue cones) | #1C2028 | 0.058 |
| Achromatopsia (no color) | #1F1F1F | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23183F
#23183F
oklch(24.6% 0.072 293.5)
- #212300
#212300
oklch(24.6% 0.055 112.9)
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 #23183F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.047
- Dark Indigo #1F0954 ΔE 0.052
- Dark Purple #35063E ΔE 0.052
- Dark #1B2431 ΔE 0.053
- Midnight Purple #280137 ΔE 0.056
- Eggplant #380835 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.058
Use #23183F 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.