#224575
Closest named color: Twilight Blue (#0A437A). oklch(39% 0.091 256.9), rgb(34, 69, 117).
Aa
White text reads best on this color (9.65:1).
About this color
#224575 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.091 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.021 away. White text reads best on it, at 9.65:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #224575 |
| RGB | rgb(34, 69, 117) |
| HSL | hsl(215, 55%, 30%) |
| OKLCH | oklch(39% 0.091 256.9) |
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 #224575 | 9.65:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #224575 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #224575 text on white | 9.65:1 | AAA | Lc 92.1 | Preferred for body text |
| #224575 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A5C3ED
oklch(81% 0.068 256.8)
-
Step 400
400
#73A2E4
oklch(70.6% 0.11 257)
-
Step 500
500
#4E8ADD
oklch(63.2% 0.14 256.9)
-
Step 600
600
#3072CA
oklch(55.6% 0.152 256.8)
-
Step 700
700
#225FAF
oklch(49.1% 0.142 256.8)
-
Step 800
800
#1E4E8E
oklch(42.7% 0.118 256.8)
-
Step 900
900 (this color)
#224575
oklch(39% 0.091 256.9)
-
Step 950
950
#132742
oklch(27.1% 0.057 256.4)
#224575 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) | #2F4977 | 0.020 |
| Deuteranopia (no green cones) | #234174 | 0.012 |
| Tritanopia (no blue cones) | #005057 | 0.073 |
| Achromatopsia (no color) | #454545 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224575
#224575
oklch(39% 0.091 256.9)
- #5D3E00
#5D3E00
oklch(39% 0.082 77)
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 #224575, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.021
- Light Navy #155084 ΔE 0.037
- Cobalt #1E488F ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.046
- Marine Blue #01386A ΔE 0.052
- Dusk Blue #26538D ΔE 0.054
- Charcoal #264653 ΔE 0.060
Use #224575 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.