#170B35
Closest named color: Midnight Purple (#280137). oklch(19.8% 0.078 290.6), rgb(23, 11, 53).
Aa
White text reads best on this color (18.49:1).
About this color
#170B35 is a very dark, moderately saturated purple. In OKLCH its lightness is 20%, its chroma 0.078 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.044 away. White text reads best on it, at 18.49:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.13:1 |
| White text | 18.49:1 |
Values
| HEX | #170B35 |
| RGB | rgb(23, 11, 53) |
| HSL | hsl(257, 66%, 13%) |
| OKLCH | oklch(19.8% 0.078 290.6) |
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 #170B35 | 18.49:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #170B35 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #170B35 text on white | 18.49:1 | AAA | Lc 104.9 | Preferred for body text |
| #170B35 text on black | 1.13:1 | 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4F9
oklch(88.5% 0.051 290.3)
-
Step 300
300
#C0B7F8
oklch(81% 0.091 290.6)
-
Step 400
400
#A18EF5
oklch(70.7% 0.148 290.6)
-
Step 500
500
#8C6EF1
oklch(63.1% 0.189 290.5)
-
Step 600
600
#7852DF
oklch(55.6% 0.204 290.6)
-
Step 700
700
#6541C2
oklch(49.1% 0.19 290.5)
-
Step 800
800
#52379D
oklch(42.7% 0.157 290.3)
-
Step 900
900
#44317C
oklch(37.7% 0.122 291.1)
-
Step 950
950 (this color)
#170B35
oklch(19.8% 0.078 290.6)
#170B35 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) | #001436 | 0.043 |
| Deuteranopia (no green cones) | #001334 | 0.043 |
| Tritanopia (no blue cones) | #0D151E | 0.062 |
| Achromatopsia (no color) | #141414 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B35
#170B35
oklch(19.8% 0.078 290.6)
- #171700
#171700
oklch(19.8% 0.043 109.8)
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 #170B35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.044
- Very Dark Purple #2A0134 ΔE 0.049
- Navy Blue #001146 ΔE 0.051
- Night Blue #040348 ΔE 0.057
- Dark Navy #000435 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.061
- Midnight #03012D ΔE 0.063
Use #170B35 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.