#224371
Closest named color: Twilight Blue (#0A437A). oklch(38.2% 0.088 257.1), rgb(34, 67, 113).
Aa
White text reads best on this color (9.95:1).
About this color
#224371 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.088 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 9.95:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.10:1 |
| White text | 9.95:1 |
Values
| HEX | #224371 |
| RGB | rgb(34, 67, 113) |
| HSL | hsl(215, 54%, 29%) |
| OKLCH | oklch(38.2% 0.088 257.1) |
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 #224371 | 9.95:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #224371 | 2.10:1 | Fails | Lc 11.1 | Not readable |
| #224371 text on white | 9.95:1 | AAA | Lc 92.9 | Preferred for body text |
| #224371 text on black | 2.10:1 | Fails | Lc -9.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EC
oklch(81% 0.066 257)
-
Step 400
400
#76A2E2
oklch(70.6% 0.106 257.7)
-
Step 500
500
#518ADA
oklch(63.1% 0.135 257.1)
-
Step 600
600
#3472C7
oklch(55.5% 0.147 257.1)
-
Step 700
700
#275FAC
oklch(49% 0.136 257.3)
-
Step 800
800
#214E8B
oklch(42.6% 0.113 256.9)
-
Step 900
900 (this color)
#224371
oklch(38.2% 0.088 257.1)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#224371 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) | #2E4773 | 0.020 |
| Deuteranopia (no green cones) | #233F70 | 0.012 |
| Tritanopia (no blue cones) | #004E54 | 0.072 |
| Achromatopsia (no color) | #434343 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224371
#224371
oklch(38.2% 0.088 257.1)
- #5A3C00
#5A3C00
oklch(38.1% 0.08 77.1)
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 #224371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Dark Grey Blue #29465B ΔE 0.042
- Light Navy #155084 ΔE 0.045
- Marine Blue #01386A ΔE 0.046
- Cobalt #1E488F ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.053
- Charcoal #264653 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.058
Use #224371 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.