#231745
Closest named color: Dark Indigo (#1F0954). oklch(24.9% 0.083 291.2), rgb(35, 23, 69).
Aa
White text reads best on this color (16.40:1).
About this color
#231745 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.083 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.041 away. White text reads best on it, at 16.40:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.27:1 |
| White text | 16.40:1 |
Values
| HEX | #231745 |
| RGB | rgb(35, 23, 69) |
| HSL | hsl(256, 50%, 18%) |
| OKLCH | oklch(24.9% 0.083 291.2) |
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 #231745 | 16.40:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #231745 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231745 text on white | 16.40:1 | AAA | Lc 103.2 | Preferred for body text |
| #231745 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D9D3FB
oklch(88.4% 0.055 292.1)
-
Step 300
300
#C1B6FB
oklch(81% 0.097 291.4)
-
Step 400
400
#A28CFA
oklch(70.6% 0.157 291)
-
Step 500
500
#8E6BF6
oklch(63.1% 0.199 291.2)
-
Step 600
600
#7A4DE5
oklch(55.6% 0.217 291.3)
-
Step 700
700
#673CC7
oklch(49% 0.202 291.3)
-
Step 800
800
#5433A1
oklch(42.7% 0.168 291.4)
-
Step 900
900
#452F80
oklch(37.8% 0.13 291.4)
-
Step 950
950 (this color)
#231745
oklch(24.9% 0.083 291.2)
#231745 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) | #002047 | 0.051 |
| Deuteranopia (no green cones) | #001E44 | 0.051 |
| Tritanopia (no blue cones) | #19212B | 0.066 |
| Achromatopsia (no color) | #1F1F1F | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231745
#231745
oklch(24.9% 0.083 291.2)
- #232400
#232400
oklch(25.1% 0.055 111.3)
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 #231745, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.041
- Dark Purple #35063E ΔE 0.052
- Oxford Blue #1B263B ΔE 0.054
- Midnight Purple #280137 ΔE 0.057
- Deep Purple #36013F ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.060
- Eggplant #380835 ΔE 0.061
- Dark #1B2431 ΔE 0.062
Use #231745 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.