#285699
Closest named color: Dusk Blue (#26538D). oklch(45.7% 0.12 258), rgb(40, 86, 153).
Aa
White text reads best on this color (7.28:1).
About this color
#285699 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.120 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.021 away. White text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #285699 |
| RGB | rgb(40, 86, 153) |
| HSL | hsl(216, 59%, 38%) |
| OKLCH | oklch(45.7% 0.12 258) |
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 #285699 | 7.28:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #285699 | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #285699 text on white | 7.28:1 | AAA | Lc 85.0 | Fine for body text |
| #285699 text on black | 2.88:1 | Fails | Lc -17.0 | Dividers and decoration only |
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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A5C3EE
oklch(81% 0.069 257.4)
-
Step 400
400
#74A2E6
oklch(70.7% 0.112 258)
-
Step 500
500
#4F89DF
oklch(63.1% 0.144 258.1)
-
Step 600
600
#3171CD
oklch(55.6% 0.157 258)
-
Step 700
700
#245EB1
oklch(49.1% 0.145 258.1)
-
Step 800
800 (this color)
#285699
oklch(45.7% 0.12 258)
-
Step 900
900
#1F4172
oklch(37.7% 0.093 257.8)
-
Step 950
950
#132643
oklch(26.9% 0.06 258.6)
#285699 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) | #355C9C | 0.023 |
| Deuteranopia (no green cones) | #215298 | 0.014 |
| Tritanopia (no blue cones) | #006670 | 0.095 |
| Achromatopsia (no color) | #565656 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285699
#285699
oklch(45.7% 0.12 258)
- #744F00
#744F00
oklch(45.7% 0.095 77.7)
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 #285699, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.033
- Light Navy #155084 ΔE 0.041
- Cobalt #1E488F ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- Twilight #4E518B ΔE 0.048
Use #285699 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.