#21246C
Closest named color: Midnight Blue (#191970). oklch(30.9% 0.123 274.8), rgb(33, 36, 108).
Aa
White text reads best on this color (13.69:1).
About this color
#21246C is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.123 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.030 away. White text reads best on it, at 13.69:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.53:1 |
| White text | 13.69:1 |
Values
| HEX | #21246C |
| RGB | rgb(33, 36, 108) |
| HSL | hsl(238, 53%, 28%) |
| OKLCH | oklch(30.9% 0.123 274.8) |
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 #21246C | 13.69:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #21246C | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #21246C text on white | 13.69:1 | AAA | Lc 99.8 | Preferred for body text |
| #21246C text on black | 1.53:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8596FF
oklch(70.6% 0.154 274.8)
-
Step 500
500
#6A78FF
oklch(63.2% 0.198 274.8)
-
Step 600
600
#5353FF
oklch(55.6% 0.247 274.8)
-
Step 700
700
#4521FF
oklch(49.1% 0.289 274.7)
-
Step 800
800
#381CD2
oklch(42.7% 0.248 274.8)
-
Step 900
900
#2D25A5
oklch(37.8% 0.194 274.6)
-
Step 950
950 (this color)
#21246C
oklch(30.9% 0.123 274.8)
#21246C 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) | #00316E | 0.040 |
| Deuteranopia (no green cones) | #002A6B | 0.032 |
| Tritanopia (no blue cones) | #003644 | 0.100 |
| Achromatopsia (no color) | #2D2D2D | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21246C
#21246C
oklch(30.9% 0.123 274.8)
- #3A2F00
#3A2F00
oklch(30.8% 0.063 94.9)
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 #21246C, closest first.
No curated palette has a color within ΔE 0.04 of #21246C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.030
- Marine #042E60 ΔE 0.043
- Marine Blue #01386A ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.074
- Dark Royal Blue #02066F ΔE 0.074
- Royal #0C1793 ΔE 0.074
- Deep Blue #040273 ΔE 0.076
Use #21246C 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.