#284668
Closest named color: Dark Grey Blue (#29465B). oklch(38.7% 0.069 252.7), rgb(40, 70, 104).
Aa
White text reads best on this color (9.69:1).
About this color
#284668 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.069 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.69:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.69:1 |
Values
| HEX | #284668 |
| RGB | rgb(40, 70, 104) |
| HSL | hsl(212, 44%, 28%) |
| OKLCH | oklch(38.7% 0.069 252.7) |
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 #284668 | 9.69:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #284668 | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #284668 text on white | 9.69:1 | AAA | Lc 92.3 | Preferred for body text |
| #284668 text on black | 2.16:1 | Fails | Lc -10.1 | 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 900.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#AAC3E2
oklch(80.9% 0.052 253.9)
-
Step 400
400
#7CA4D3
oklch(70.7% 0.082 252.9)
-
Step 500
500
#598DC7
oklch(63.2% 0.104 252.2)
-
Step 600
600
#3E76B4
oklch(55.7% 0.114 252.6)
-
Step 700
700
#2F639B
oklch(49.2% 0.106 252.3)
-
Step 800
800
#28517E
oklch(42.8% 0.088 252.5)
-
Step 900
900 (this color)
#284668
oklch(38.7% 0.069 252.7)
-
Step 950
950
#16273B
oklch(26.8% 0.044 253.3)
#284668 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) | #384869 | 0.022 |
| Deuteranopia (no green cones) | #2F4267 | 0.014 |
| Tritanopia (no blue cones) | #004E52 | 0.059 |
| Achromatopsia (no color) | #444444 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284668
#284668
oklch(38.7% 0.069 252.7)
- #5B3E15
#5B3E15
oklch(38.8% 0.069 72.3)
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 #284668, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.040
- Light Navy #155084 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.055
- Marine Blue #01386A ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.059
Use #284668 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.