#223A52
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34% 0.052 249.6), rgb(34, 58, 82).
Aa
White text reads best on this color (11.69:1).
About this color
#223A52 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.052 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.011 away. White text reads best on it, at 11.69:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.79:1 |
| White text | 11.69:1 |
Values
| HEX | #223A52 |
| RGB | rgb(34, 58, 82) |
| HSL | hsl(210, 41%, 23%) |
| OKLCH | oklch(34% 0.052 249.6) |
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 #223A52 | 11.69:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #223A52 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #223A52 text on white | 11.69:1 | AAA | Lc 96.8 | Preferred for body text |
| #223A52 text on black | 1.79:1 | Fails | Lc 0.0 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#83A4C7
oklch(70.7% 0.063 250.2)
-
Step 500
500
#638DB8
oklch(63% 0.08 249.8)
-
Step 600
600
#4A77A4
oklch(55.6% 0.086 249.6)
-
Step 700
700
#3B648D
oklch(49.2% 0.081 249.8)
-
Step 800
800
#315272
oklch(42.8% 0.066 248.9)
-
Step 900
900 (this color)
#223A52
oklch(34% 0.052 249.6)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#223A52 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) | #303B53 | 0.020 |
| Deuteranopia (no green cones) | #2A3652 | 0.016 |
| Tritanopia (no blue cones) | #064042 | 0.046 |
| Achromatopsia (no color) | #383838 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223A52
#223A52
oklch(34% 0.052 249.6)
- #493318
#493318
oklch(34% 0.052 70.2)
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 #223A52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.011
- Prussian Blue #1D3557 ΔE 0.022
- Midnight Green #073B4C ΔE 0.026
- Gunmetal #293241 ΔE 0.034
- Onyx #343A40 ΔE 0.039
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.045
Use #223A52 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.