#021021
Closest named color: Rich Navy (#001219). oklch(17% 0.042 251.1), rgb(2, 16, 33).
Aa
White text reads best on this color (19.11:1).
About this color
#021021 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.042 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.021 away. White text reads best on it, at 19.11:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.11:1 |
Values
| HEX | #021021 |
| RGB | rgb(2, 16, 33) |
| HSL | hsl(213, 89%, 7%) |
| OKLCH | oklch(17% 0.042 251.1) |
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 #021021 | 19.11:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #021021 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #021021 text on white | 19.11:1 | AAA | Lc 105.4 | Preferred for body text |
| #021021 text on black | 1.09:1 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E1
oklch(81% 0.051 250.3)
-
Step 400
400
#7BA4D1
oklch(70.6% 0.08 251.3)
-
Step 500
500
#588DC5
oklch(63% 0.102 251)
-
Step 600
600
#3D76B2
oklch(55.5% 0.111 251.5)
-
Step 700
700
#2F6399
oklch(49% 0.103 251.5)
-
Step 800
800
#28517C
oklch(42.7% 0.085 251.5)
-
Step 900
900
#254464
oklch(37.8% 0.066 250.7)
-
Step 950
950 (this color)
#021021
oklch(17% 0.042 251.1)
#021021 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) | #081122 | 0.013 |
| Deuteranopia (no green cones) | #040E21 | 0.008 |
| Tritanopia (no blue cones) | #001416 | 0.032 |
| Achromatopsia (no color) | #0F0F0F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021021
#021021
oklch(17% 0.042 251.1)
- #190C00
#190C00
oklch(16.9% 0.036 70.9)
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 #021021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.021
- Almost Black #070D0D ΔE 0.041
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy #000435 ΔE 0.056
- Dark Navy Blue #00022E ΔE 0.057
- Midnight #03012D ΔE 0.058
- Very Dark Blue #000133 ΔE 0.062
- Navy Blue #001146 ΔE 0.073
Use #021021 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.