#284763
Closest named color: Dark Grey Blue (#29465B). oklch(38.7% 0.061 247.3), rgb(40, 71, 99).
Aa
White text reads best on this color (9.66:1).
About this color
#284763 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.061 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.013 away. White text reads best on it, at 9.66:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.66:1 |
Values
| HEX | #284763 |
| RGB | rgb(40, 71, 99) |
| HSL | hsl(208, 42%, 27%) |
| OKLCH | oklch(38.7% 0.061 247.3) |
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 #284763 | 9.66:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #284763 | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #284763 text on white | 9.66:1 | AAA | Lc 92.3 | Preferred for body text |
| #284763 text on black | 2.17:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#AAC4DD
oklch(80.9% 0.045 247.3)
-
Step 400
400
#7CA5CC
oklch(70.7% 0.073 247.6)
-
Step 500
500
#598EBF
oklch(63% 0.093 247.7)
-
Step 600
600
#3D78AB
oklch(55.6% 0.101 246.9)
-
Step 700
700
#2F6593
oklch(49.2% 0.094 246.9)
-
Step 800
800
#285277
oklch(42.6% 0.078 247.4)
-
Step 900
900 (this color)
#284763
oklch(38.7% 0.061 247.3)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#284763 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) | #3B4864 | 0.025 |
| Deuteranopia (no green cones) | #334262 | 0.019 |
| Tritanopia (no blue cones) | #004E51 | 0.052 |
| Achromatopsia (no color) | #444444 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284763
#284763
oklch(38.7% 0.061 247.3)
- #5A3E1E
#5A3E1E
oklch(38.8% 0.061 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 #284763, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.013
- Charcoal #264653 ΔE 0.028
- Twilight Blue #0A437A ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.051
- Dark Teal #014D4E ΔE 0.054
- Deep Teal #00555A ΔE 0.056
- Light Navy #155084 ΔE 0.057
Use #284763 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.