#283447
Closest named color: Gunmetal (#293241). oklch(32.3% 0.038 259.4), rgb(40, 52, 71).
Aa
White text reads best on this color (12.55:1).
About this color
#283447 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.038 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.011 away. White text reads best on it, at 12.55:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.67:1 |
| White text | 12.55:1 |
Values
| HEX | #283447 |
| RGB | rgb(40, 52, 71) |
| HSL | hsl(217, 28%, 22%) |
| OKLCH | oklch(32.3% 0.038 259.4) |
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 #283447 | 12.55:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #283447 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #283447 text on white | 12.55:1 | AAA | Lc 98.5 | Preferred for body text |
| #283447 text on black | 1.67:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B0C2DE
oklch(80.9% 0.044 259.2)
-
Step 400
400
#86A2CE
oklch(70.7% 0.072 259.3)
-
Step 500
500
#688AC1
oklch(63% 0.092 259.8)
-
Step 600
600
#4F74AD
oklch(55.7% 0.099 258.8)
-
Step 700
700
#406195
oklch(49.2% 0.092 259.2)
-
Step 800
800
#354F79
oklch(42.7% 0.077 259.6)
-
Step 900
900
#2E4261
oklch(37.7% 0.059 258.9)
-
Step 950
950 (this color)
#283447
oklch(32.3% 0.038 259.4)
#283447 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) | #2D3548 | 0.009 |
| Deuteranopia (no green cones) | #2A3247 | 0.007 |
| Tritanopia (no blue cones) | #1E383A | 0.034 |
| Achromatopsia (no color) | #333333 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283447
#283447
oklch(32.3% 0.038 259.4)
- #3E311D
#3E311D
oklch(32.2% 0.037 77.6)
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 #283447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.011
- Space Cadet #2B2D42 ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.024
- Prussian Blue #1D3557 ΔE 0.030
- Onyx #343A40 ΔE 0.033
- Midnight Green #073B4C ΔE 0.035
- Oxford Blue #1B263B ΔE 0.054
- Charcoal #264653 ΔE 0.058
Use #283447 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.