#081729
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.042 254), rgb(8, 23, 41).
Aa
White text reads best on this color (18.02:1).
About this color
#081729 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.042 and its hue 254°. 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 18.02:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.02:1 |
Values
| HEX | #081729 |
| RGB | rgb(8, 23, 41) |
| HSL | hsl(213, 67%, 10%) |
| OKLCH | oklch(20.2% 0.042 254) |
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 #081729 | 18.02:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #081729 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #081729 text on white | 18.02:1 | AAA | Lc 104.7 | Preferred for body text |
| #081729 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
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA4D2
oklch(70.8% 0.08 253.6)
-
Step 500
500
#5D8CC6
oklch(63.1% 0.102 254.3)
-
Step 600
600
#4275B2
oklch(55.5% 0.11 254)
-
Step 700
700
#346299
oklch(49% 0.102 254.1)
-
Step 800
800
#2C507C
oklch(42.6% 0.085 254.4)
-
Step 900
900
#284364
oklch(37.8% 0.066 254.2)
-
Step 950
950 (this color)
#081729
oklch(20.2% 0.042 254)
#081729 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) | #0F182A | 0.011 |
| Deuteranopia (no green cones) | #0B1529 | 0.008 |
| Tritanopia (no blue cones) | #001B1E | 0.033 |
| Achromatopsia (no color) | #161616 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #081729
#081729
oklch(20.2% 0.042 254)
- #221300
#221300
oklch(20.2% 0.043 73.8)
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 #081729, 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 0.040
- Dark #1B2431 ΔE 0.058
- Navy Blue #001146 ΔE 0.062
- Almost Black #070D0D ΔE 0.062
- Oxford Blue #1B263B ΔE 0.067
- Jet #212529 ΔE 0.068
- Dark Navy #000435 ΔE 0.069
Use #081729 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.