#21418D
Closest named color: Cobalt (#1E488F). oklch(39.8% 0.132 264.1), rgb(33, 65, 141).
Aa
White text reads best on this color (9.52:1).
About this color
#21418D is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.132 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.52:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #21418D |
| RGB | rgb(33, 65, 141) |
| HSL | hsl(222, 62%, 34%) |
| OKLCH | oklch(39.8% 0.132 264.1) |
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 #21418D | 9.52:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #21418D | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #21418D text on white | 9.52:1 | AAA | Lc 91.6 | Preferred for body text |
| #21418D text on black | 2.20:1 | Fails | Lc -10.8 | 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 900.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#2D64F1
oklch(55.5% 0.22 264.2)
-
Step 700
700
#2152D2
oklch(49.1% 0.204 264.1)
-
Step 800
800
#1C44AA
oklch(42.7% 0.17 264.1)
-
Step 900
900 (this color)
#21418D
oklch(39.8% 0.132 264.1)
-
Step 950
950
#11234F
oklch(27% 0.084 264.6)
#21418D 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) | #0B4B90 | 0.028 |
| Deuteranopia (no green cones) | #00418B | 0.020 |
| Tritanopia (no blue cones) | #005360 | 0.104 |
| Achromatopsia (no color) | #454545 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21418D
#21418D
oklch(39.8% 0.132 264.1)
- #5C4300
#5C4300
oklch(39.9% 0.082 84.4)
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 #21418D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Twilight Blue #0A437A ΔE 0.037
- Light Navy #155084 ΔE 0.047
- Blueberry #464196 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.052
- Dusk Blue #26538D ΔE 0.052
- Sapphire #2138AB ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.061
Use #21418D 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.