#021F5D
Closest named color: Midnight Blue (#191970). oklch(26.8% 0.116 262), rgb(2, 31, 93).
Aa
White text reads best on this color (15.47:1).
About this color
#021F5D is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.116 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.042 away. White text reads best on it, at 15.47:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.35:1 |
| White text | 15.47:1 |
Values
| HEX | #021F5D |
| RGB | rgb(2, 31, 93) |
| HSL | hsl(221, 96%, 19%) |
| OKLCH | oklch(26.8% 0.116 262) |
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 #021F5D | 15.47:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #021F5D | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #021F5D text on white | 15.47:1 | AAA | Lc 101.8 | Preferred for body text |
| #021F5D text on black | 1.35:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4182FF
oklch(63.1% 0.198 261.8)
-
Step 600
600
#0D61FF
oklch(55.5% 0.245 262)
-
Step 700
700
#004FDE
oklch(49.1% 0.227 262)
-
Step 800
800
#0040B8
oklch(42.7% 0.197 262)
-
Step 900
900
#00359B
oklch(37.7% 0.173 261.9)
-
Step 950
950 (this color)
#021F5D
oklch(26.8% 0.116 262)
#021F5D 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) | #00295F | 0.028 |
| Deuteranopia (no green cones) | #00205C | 0.003 |
| Tritanopia (no blue cones) | #002F3A | 0.088 |
| Achromatopsia (no color) | #242424 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021F5D
#021F5D
oklch(26.8% 0.116 262)
- #332300
#332300
oklch(26.8% 0.055 83)
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 #021F5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.042
- Marine #042E60 ΔE 0.044
- Darkblue #030764 ΔE 0.047
- Dark Royal Blue #02066F ΔE 0.051
- Deep Blue #040273 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.058
- Navy Blue #001146 ΔE 0.059
- Navy #000080 ΔE 0.072
Use #021F5D 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.