#021736
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.067 257), rgb(2, 23, 54).
Aa
White text reads best on this color (17.82:1).
About this color
#021736 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.067 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.033 away. White text reads best on it, at 17.82:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.82:1 |
Values
| HEX | #021736 |
| RGB | rgb(2, 23, 54) |
| HSL | hsl(216, 93%, 11%) |
| OKLCH | oklch(20.9% 0.067 257) |
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 #021736 | 17.82:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #021736 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #021736 text on white | 17.82:1 | AAA | Lc 104.4 | Preferred for body text |
| #021736 text on black | 1.17:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A0C3F4
oklch(80.9% 0.079 256.8)
-
Step 400
400
#6BA2EF
oklch(70.7% 0.128 257)
-
Step 500
500
#4189EA
oklch(63.2% 0.163 256.8)
-
Step 600
600
#1E70D8
oklch(55.6% 0.177 257)
-
Step 700
700
#0E5DBB
oklch(49.1% 0.164 256.9)
-
Step 800
800
#114C97
oklch(42.6% 0.136 257.1)
-
Step 900
900
#174179
oklch(37.9% 0.106 256.9)
-
Step 950
950 (this color)
#021736
oklch(20.9% 0.067 257)
#021736 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) | #051A37 | 0.012 |
| Deuteranopia (no green cones) | #001535 | 0.008 |
| Tritanopia (no blue cones) | #001F23 | 0.053 |
| Achromatopsia (no color) | #181818 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021736
#021736
oklch(20.9% 0.067 257)
- #231500
#231500
oklch(20.9% 0.044 77.5)
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 #021736, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.033
- Navy Blue #001146 ΔE 0.036
- Dark Navy #000435 ΔE 0.058
- Night Blue #040348 ΔE 0.058
- Rich Navy #001219 ΔE 0.060
- Dark #1B2431 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.065
- Very Dark Blue #000133 ΔE 0.069
Use #021736 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.