#213447
Closest named color: Gunmetal (#293241). oklch(31.8% 0.042 249.3), rgb(33, 52, 71).
Aa
White text reads best on this color (12.75:1).
About this color
#213447 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.042 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.014 away. White text reads best on it, at 12.75:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.64:1 |
| White text | 12.75:1 |
Values
| HEX | #213447 |
| RGB | rgb(33, 52, 71) |
| HSL | hsl(210, 37%, 20%) |
| OKLCH | oklch(31.8% 0.042 249.3) |
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 #213447 | 12.75:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #213447 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #213447 text on white | 12.75:1 | AAA | Lc 98.8 | Preferred for body text |
| #213447 text on black | 1.64:1 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A8C4E0
oklch(80.9% 0.05 248.4)
-
Step 400
400
#7AA5D1
oklch(70.7% 0.08 249.6)
-
Step 500
500
#568EC5
oklch(63.1% 0.102 249.3)
-
Step 600
600
#3977B1
oklch(55.5% 0.111 249.1)
-
Step 700
700
#2B6498
oklch(49.1% 0.103 248.9)
-
Step 800
800
#25527C
oklch(42.8% 0.086 249.1)
-
Step 900
900
#234463
oklch(37.7% 0.066 248.6)
-
Step 950
950 (this color)
#213447
oklch(31.8% 0.042 249.3)
#213447 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) | #2C3548 | 0.017 |
| Deuteranopia (no green cones) | #283147 | 0.013 |
| Tritanopia (no blue cones) | #10383A | 0.036 |
| Achromatopsia (no color) | #323232 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213447
#213447
oklch(31.8% 0.042 249.3)
- #402E1A
#402E1A
oklch(31.7% 0.042 68.3)
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 #213447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.014
- Dark Blue Grey #1F3B4D ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.028
- Midnight Green #073B4C ΔE 0.028
- Onyx #343A40 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.050
- Marine #042E60 ΔE 0.059
Use #213447 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.