#08172B
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.045 256.1), rgb(8, 23, 43).
Aa
White text reads best on this color (17.98:1).
About this color
#08172B is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.045 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.017 away. White text reads best on it, at 17.98:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.98:1 |
Values
| HEX | #08172B |
| RGB | rgb(8, 23, 43) |
| HSL | hsl(214, 69%, 10%) |
| OKLCH | oklch(20.4% 0.045 256.1) |
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 #08172B | 17.98:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #08172B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #08172B text on white | 17.98:1 | AAA | Lc 104.6 | Preferred for body text |
| #08172B text on black | 1.16:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#AAC3E4
oklch(81% 0.054 255.4)
-
Step 400
400
#7DA3D6
oklch(70.7% 0.086 255.9)
-
Step 500
500
#5C8BCB
oklch(63.1% 0.11 256.4)
-
Step 600
600
#4174B8
oklch(55.6% 0.12 256.2)
-
Step 700
700
#33619E
oklch(49% 0.111 256.2)
-
Step 800
800
#2B5080
oklch(42.8% 0.091 255.7)
-
Step 900
900
#274267
oklch(37.6% 0.072 256.6)
-
Step 950
950 (this color)
#08172B
oklch(20.4% 0.045 256.1)
#08172B 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) | #0E182C | 0.010 |
| Deuteranopia (no green cones) | #09152B | 0.007 |
| Tritanopia (no blue cones) | #001C1E | 0.038 |
| Achromatopsia (no color) | #171717 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #08172B
#08172B
oklch(20.4% 0.045 256.1)
- #221400
#221400
oklch(20.5% 0.043 76.7)
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 #08172B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.017
- Rich Navy #001219 ΔE 0.043
- Dark #1B2431 ΔE 0.057
- Navy Blue #001146 ΔE 0.058
- Almost Black #070D0D ΔE 0.066
- Oxford Blue #1B263B ΔE 0.066
- Dark Navy #000435 ΔE 0.067
- Jet #212529 ΔE 0.069
Use #08172B 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.