#223640
Closest named color: Gunmetal (#293241). oklch(32% 0.031 230.7), rgb(34, 54, 64).
Aa
White text reads best on this color (12.57:1).
About this color
#223640 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.031 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.017 away. White text reads best on it, at 12.57:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.66:1 |
| White text | 12.57:1 |
Values
| HEX | #223640 |
| RGB | rgb(34, 54, 64) |
| HSL | hsl(200, 31%, 19%) |
| OKLCH | oklch(32% 0.031 230.7) |
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 #223640 | 12.57:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #223640 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #223640 text on white | 12.57:1 | AAA | Lc 98.5 | Preferred for body text |
| #223640 text on black | 1.66:1 | 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 950.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D4
oklch(81% 0.037 228.5)
-
Step 400
400
#7BA8BF
oklch(70.7% 0.059 230.8)
-
Step 500
500
#5792AF
oklch(63.1% 0.075 231)
-
Step 600
600
#3A7C9B
oklch(55.7% 0.082 231.2)
-
Step 700
700
#2B6884
oklch(49% 0.077 231.1)
-
Step 800
800
#25556B
oklch(42.6% 0.063 230.6)
-
Step 900
900
#244657
oklch(37.6% 0.049 231.8)
-
Step 950
950 (this color)
#223640
oklch(32% 0.031 230.7)
#223640 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) | #313541 | 0.022 |
| Deuteranopia (no green cones) | #2D3240 | 0.020 |
| Tritanopia (no blue cones) | #163939 | 0.023 |
| Achromatopsia (no color) | #333333 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223640
#223640
oklch(32% 0.031 230.7)
- #402E24
#402E24
oklch(31.9% 0.032 50.3)
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 #223640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.024
- Midnight Green #073B4C ΔE 0.029
- Onyx #343A40 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.056
Use #223640 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.