#000821
Closest named color: Dark Navy Blue (#00022E). oklch(14.4% 0.057 259.4), rgb(0, 8, 33).
Aa
White text reads best on this color (19.87:1).
About this color
#000821 is a very dark, muted blue. In OKLCH its lightness is 14%, its chroma 0.057 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Navy Blue (#00022E), ΔE 0.033 away. White text reads best on it, at 19.87:1.
| Hue family | Blues |
| Lightness | very dark (14%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Navy Blue (#00022E) |
| Black text | 1.05:1 |
| White text | 19.87:1 |
Values
| HEX | #000821 |
| RGB | rgb(0, 8, 33) |
| HSL | hsl(225, 100%, 6%) |
| OKLCH | oklch(14.4% 0.057 259.4) |
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 #000821 | 19.87:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #000821 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #000821 text on white | 19.87:1 | AAA | Lc 105.7 | Preferred for body text |
| #000821 text on black | 1.05:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2ED
oklch(80.9% 0.068 259.6)
-
Step 400
400
#78A1E4
oklch(70.6% 0.109 259.9)
-
Step 500
500
#5589DC
oklch(63.2% 0.138 259.4)
-
Step 600
600
#3971CA
oklch(55.7% 0.15 259.3)
-
Step 700
700
#2B5EAE
oklch(49.1% 0.139 259.2)
-
Step 800
800
#254D8D
oklch(42.7% 0.115 259.4)
-
Step 900
900
#234171
oklch(37.8% 0.09 259.4)
-
Step 950
950 (this color)
#000821
oklch(14.4% 0.057 259.4)
#000821 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) | #000B22 | 0.011 |
| Deuteranopia (no green cones) | #000821 | 0.000 |
| Tritanopia (no blue cones) | #000E13 | 0.041 |
| Achromatopsia (no color) | #090909 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #000821
#000821
oklch(14.4% 0.057 259.4)
- #100800
#100800
oklch(14.3% 0.03 79.6)
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 #000821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Navy Blue #00022E ΔE 0.033
- Midnight #03012D ΔE 0.034
- Dark Navy #000435 ΔE 0.042
- Very Dark Blue #000133 ΔE 0.042
- Rich Navy #001219 ΔE 0.045
- Almost Black #070D0D ΔE 0.054
- Rich Black #0D1B2A ΔE 0.077
- Night Blue #040348 ΔE 0.079
Use #000821 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.