#223487
Closest named color: Twilight Blue (#0A437A). oklch(36.6% 0.14 268.9), rgb(34, 52, 135).
Aa
White text reads best on this color (11.00:1).
About this color
#223487 is a dark, vivid blue. In OKLCH its lightness is 37%, its chroma 0.140 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.049 away. White text reads best on it, at 11.00:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.90:1 |
| White text | 11.00:1 |
Values
| HEX | #223487 |
| RGB | rgb(34, 52, 135) |
| HSL | hsl(229, 60%, 33%) |
| OKLCH | oklch(36.6% 0.14 268.9) |
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 #223487 | 11.00:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #223487 | 1.90:1 | Fails | Lc 9.0 | Not readable |
| #223487 text on white | 11.00:1 | AAA | Lc 95.0 | Preferred for body text |
| #223487 text on black | 1.90:1 | Fails | Lc -7.7 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5A7CFF
oklch(63% 0.198 269.1)
-
Step 600
600
#405DF9
oklch(55.7% 0.233 269)
-
Step 700
700
#334BD9
oklch(49.2% 0.217 269)
-
Step 800
800
#2A3FAF
oklch(42.8% 0.179 269)
-
Step 900
900 (this color)
#223487
oklch(36.6% 0.14 268.9)
-
Step 950
950
#152151
oklch(26.9% 0.089 269)
#223487 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) | #00418A | 0.037 |
| Deuteranopia (no green cones) | #003885 | 0.025 |
| Tritanopia (no blue cones) | #004958 | 0.112 |
| Achromatopsia (no color) | #3C3C3C | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223487
#223487
oklch(36.6% 0.14 268.9)
- #4F3C00
#4F3C00
oklch(36.7% 0.075 88.5)
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 #223487, closest first.
No curated palette has a color within ΔE 0.04 of #223487.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.049
- Cobalt #1E488F ΔE 0.054
- Marine Blue #01386A ΔE 0.058
- Sapphire #2138AB ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.064
- Royal #0C1793 ΔE 0.068
- Blueberry #464196 ΔE 0.070
- Marine #042E60 ΔE 0.076
Use #223487 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.