#224370
Closest named color: Twilight Blue (#0A437A). oklch(38.2% 0.086 256.7), rgb(34, 67, 112).
Aa
White text reads best on this color (9.97:1).
About this color
#224370 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.086 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.023 away. White text reads best on it, at 9.97:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.10:1 |
| White text | 9.97:1 |
Values
| HEX | #224370 |
| RGB | rgb(34, 67, 112) |
| HSL | hsl(215, 53%, 29%) |
| OKLCH | oklch(38.2% 0.086 256.7) |
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 #224370 | 9.97:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #224370 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #224370 text on white | 9.97:1 | AAA | Lc 92.9 | Preferred for body text |
| #224370 text on black | 2.10:1 | Fails | Lc -9.5 | 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
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#76A3E1
oklch(70.8% 0.104 256.6)
-
Step 500
500
#518AD8
oklch(63% 0.133 256.7)
-
Step 600
600
#3573C6
oklch(55.7% 0.144 256.7)
-
Step 700
700
#2760AB
oklch(49.2% 0.134 256.6)
-
Step 800
800
#224E8A
oklch(42.6% 0.111 257)
-
Step 900
900 (this color)
#224370
oklch(38.2% 0.086 256.7)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#224370 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) | #2F4672 | 0.019 |
| Deuteranopia (no green cones) | #243F6F | 0.012 |
| Tritanopia (no blue cones) | #004D54 | 0.069 |
| Achromatopsia (no color) | #424242 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224370
#224370
oklch(38.2% 0.086 256.7)
- #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 #224370, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.023
- Dark Grey Blue #29465B ΔE 0.040
- Marine Blue #01386A ΔE 0.046
- Light Navy #155084 ΔE 0.046
- Cobalt #1E488F ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Charcoal #264653 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.057
Use #224370 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.