#213548
Closest named color: Gunmetal (#293241). oklch(32.1% 0.043 248), rgb(33, 53, 72).
Aa
White text reads best on this color (12.59:1).
About this color
#213548 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.043 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.016 away. White text reads best on it, at 12.59:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.66:1 |
| White text | 12.59:1 |
Values
| HEX | #213548 |
| RGB | rgb(33, 53, 72) |
| HSL | hsl(209, 37%, 21%) |
| OKLCH | oklch(32.1% 0.043 248) |
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 #213548 | 12.59:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #213548 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #213548 text on white | 12.59:1 | AAA | Lc 98.5 | Preferred for body text |
| #213548 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A8C4E0
oklch(80.9% 0.05 248.4)
-
Step 400
400
#78A5D1
oklch(70.6% 0.081 248.5)
-
Step 500
500
#538EC5
oklch(63% 0.104 248.2)
-
Step 600
600
#3678B2
oklch(55.7% 0.113 247.9)
-
Step 700
700
#286499
oklch(49% 0.105 248.5)
-
Step 800
800
#23527C
oklch(42.7% 0.087 248.3)
-
Step 900
900
#224464
oklch(37.7% 0.068 248.8)
-
Step 950
950 (this color)
#213548
oklch(32.1% 0.043 248)
#213548 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) | #2D3549 | 0.017 |
| Deuteranopia (no green cones) | #283148 | 0.015 |
| Tritanopia (no blue cones) | #0F393B | 0.036 |
| Achromatopsia (no color) | #333333 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213548
#213548
oklch(32.1% 0.043 248)
- #422F1A
#422F1A
oklch(32.2% 0.043 68)
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 #213548, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.020
- Midnight Green #073B4C ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.028
- Onyx #343A40 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.053
- Charcoal #264653 ΔE 0.057
Use #213548 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.