#212971
Closest named color: Midnight Blue (#191970). oklch(32.3% 0.123 272.6), rgb(33, 41, 113).
Aa
White text reads best on this color (12.96:1).
About this color
#212971 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.123 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.041 away. White text reads best on it, at 12.96:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.62:1 |
| White text | 12.96:1 |
Values
| HEX | #212971 |
| RGB | rgb(33, 41, 113) |
| HSL | hsl(234, 55%, 29%) |
| OKLCH | oklch(32.3% 0.123 272.6) |
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 #212971 | 12.96:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #212971 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #212971 text on white | 12.96:1 | AAA | Lc 98.8 | Preferred for body text |
| #212971 text on black | 1.62:1 | 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
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500
#6479FF
oklch(63% 0.199 272.7)
-
Step 600
600
#4C56FF
oklch(55.6% 0.245 272.6)
-
Step 700
700
#3D27FF
oklch(49.1% 0.288 272.5)
-
Step 800
800
#311FD3
oklch(42.6% 0.249 272.5)
-
Step 900
900
#2826A6
oklch(37.7% 0.195 272.6)
-
Step 950
950 (this color)
#212971
oklch(32.3% 0.123 272.6)
#212971 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) | #003573 | 0.037 |
| Deuteranopia (no green cones) | #002E70 | 0.029 |
| Tritanopia (no blue cones) | #003B48 | 0.101 |
| Achromatopsia (no color) | #313131 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212971
#212971
oklch(32.3% 0.123 272.6)
- #3F3200
#3F3200
oklch(32.2% 0.066 92.9)
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 #212971, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.041
- Marine #042E60 ΔE 0.043
- Marine Blue #01386A ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.061
- Royal #0C1793 ΔE 0.071
- Twilight Blue #0A437A ΔE 0.072
- Dark Royal Blue #02066F ΔE 0.084
- Deep Blue #040273 ΔE 0.085
Use #212971 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.