#213443
Closest named color: Gunmetal (#293241). oklch(31.6% 0.037 243.1), rgb(33, 52, 67).
Aa
White text reads best on this color (12.82:1).
About this color
#213443 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.037 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.012 away. White text reads best on it, at 12.82:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.63:1 |
| White text | 12.82:1 |
Values
| HEX | #213443 |
| RGB | rgb(33, 52, 67) |
| HSL | hsl(206, 34%, 20%) |
| OKLCH | oklch(31.6% 0.037 243.1) |
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 #213443 | 12.82:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #213443 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #213443 text on white | 12.82:1 | AAA | Lc 98.9 | Preferred for body text |
| #213443 text on black | 1.63:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#A9C5DB
oklch(81% 0.043 241.8)
-
Step 400
400
#7BA6C9
oklch(70.7% 0.069 243.5)
-
Step 500
500
#5790BB
oklch(63.2% 0.089 242.5)
-
Step 600
600
#3B79A7
oklch(55.6% 0.096 243.2)
-
Step 700
700
#2D668F
oklch(49.1% 0.089 242.8)
-
Step 800
800
#265374
oklch(42.6% 0.074 243)
-
Step 900
900
#24455E
oklch(37.7% 0.058 243)
-
Step 950
950 (this color)
#213443
oklch(31.6% 0.037 243.1)
#213443 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) | #2E3444 | 0.019 |
| Deuteranopia (no green cones) | #293043 | 0.017 |
| Tritanopia (no blue cones) | #133839 | 0.031 |
| Achromatopsia (no color) | #323232 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213443
#213443
oklch(31.6% 0.037 243.1)
- #3F2E1E
#3F2E1E
oklch(31.6% 0.036 64.2)
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 #213443, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.012
- Dark Blue Grey #1F3B4D ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.026
- Midnight Green #073B4C ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.036
- Onyx #343A40 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.049
- Dark #1B2431 ΔE 0.059
Use #213443 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.