#284675
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.088 259.1), rgb(40, 70, 117).
Aa
White text reads best on this color (9.44:1).
About this color
#284675 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.088 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.027 away. White text reads best on it, at 9.44:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #284675 |
| RGB | rgb(40, 70, 117) |
| HSL | hsl(217, 49%, 31%) |
| OKLCH | oklch(39.5% 0.088 259.1) |
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 #284675 | 9.44:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #284675 | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #284675 text on white | 9.44:1 | AAA | Lc 91.7 | Preferred for body text |
| #284675 text on black | 2.22:1 | Fails | Lc -10.7 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A7C2EC
oklch(80.8% 0.067 259.1)
-
Step 400
400
#78A2E2
oklch(70.7% 0.105 258.6)
-
Step 500
500
#5589DA
oklch(63.1% 0.135 259)
-
Step 600
600
#3A71C7
oklch(55.5% 0.146 259.1)
-
Step 700
700
#2C5EAC
oklch(49% 0.136 259.1)
-
Step 800
800
#264D8C
oklch(42.7% 0.114 259.6)
-
Step 900
900 (this color)
#284675
oklch(39.5% 0.088 259.1)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#284675 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) | #314A77 | 0.017 |
| Deuteranopia (no green cones) | #274374 | 0.009 |
| Tritanopia (no blue cones) | #005158 | 0.073 |
| Achromatopsia (no color) | #464646 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284675
#284675
oklch(39.5% 0.088 259.1)
- #5E4000
#5E4000
oklch(39.5% 0.082 78.6)
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 #284675, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.027
- Light Navy #155084 ΔE 0.035
- Cobalt #1E488F ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.045
- Dusk Blue #26538D ΔE 0.050
- Marine Blue #01386A ΔE 0.059
- Charcoal #264653 ΔE 0.060
Use #284675 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.