#285491
Closest named color: Dusk Blue (#26538D). oklch(44.7% 0.112 257.1), rgb(40, 84, 145).
Aa
White text reads best on this color (7.58:1).
About this color
#285491 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.112 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.007 away. White text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #285491 |
| RGB | rgb(40, 84, 145) |
| HSL | hsl(215, 57%, 36%) |
| OKLCH | oklch(44.7% 0.112 257.1) |
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 #285491 | 7.58:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #285491 | 2.76:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #285491 text on white | 7.58:1 | AAA | Lc 86.1 | Fine for body text |
| #285491 text on black | 2.76:1 | Fails | Lc -16.0 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#76A2E1
oklch(70.6% 0.105 257.4)
-
Step 500
500
#528AD9
oklch(63.1% 0.134 257.2)
-
Step 600
600
#3572C6
oklch(55.5% 0.145 257.1)
-
Step 700
700
#285FAB
oklch(49% 0.135 257.3)
-
Step 800
800 (this color)
#285491
oklch(44.7% 0.112 257.1)
-
Step 900
900
#21426F
oklch(37.8% 0.087 256.7)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#285491 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) | #375993 | 0.023 |
| Deuteranopia (no green cones) | #264F90 | 0.015 |
| Tritanopia (no blue cones) | #00626B | 0.088 |
| Achromatopsia (no color) | #545454 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285491
#285491
oklch(44.7% 0.112 257.1)
- #714C00
#714C00
oklch(44.6% 0.093 76.7)
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 #285491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.007
- Light Navy Blue #2E5A88 ΔE 0.026
- Light Navy #155084 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.031
- Deep Sea Blue #015482 ΔE 0.035
- Cobalt #1E488F ΔE 0.037
- Twilight #4E518B ΔE 0.046
- Dusky Blue #475F94 ΔE 0.050
Use #285491 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.