#28405F
Closest named color: Dark Grey Blue (#29465B). oklch(36.7% 0.062 255.3), rgb(40, 64, 95).
Aa
White text reads best on this color (10.55:1).
About this color
#28405F is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.062 and its hue 255°. 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 10.55:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.55:1 |
Values
| HEX | #28405F |
| RGB | rgb(40, 64, 95) |
| HSL | hsl(214, 41%, 26%) |
| OKLCH | oklch(36.7% 0.062 255.3) |
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 #28405F | 10.55:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #28405F | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #28405F text on white | 10.55:1 | AAA | Lc 94.4 | Preferred for body text |
| #28405F text on black | 1.98:1 | Fails | Lc -8.2 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#ADC3DF
oklch(81% 0.046 254.5)
-
Step 400
400
#82A3CF
oklch(70.7% 0.074 255.8)
-
Step 500
500
#628CC2
oklch(63.2% 0.094 255.1)
-
Step 600
600
#4875AE
oklch(55.6% 0.102 255)
-
Step 700
700
#396296
oklch(49.1% 0.096 255.1)
-
Step 800
800
#30507A
oklch(42.7% 0.08 255.7)
-
Step 900
900 (this color)
#28405F
oklch(36.7% 0.062 255.3)
-
Step 950
950
#192739
oklch(26.9% 0.039 255.1)
#28405F 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) | #344260 | 0.018 |
| Deuteranopia (no green cones) | #2D3C5E | 0.013 |
| Tritanopia (no blue cones) | #07474B | 0.055 |
| Achromatopsia (no color) | #3F3F3F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28405F
#28405F
oklch(36.7% 0.062 255.3)
- #523A15
#523A15
oklch(36.8% 0.062 75.3)
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 #28405F, 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 0.033
- Dark Blue Grey #1F3B4D ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.040
- Marine Blue #01386A ΔE 0.049
- Midnight Green #073B4C ΔE 0.049
- Twilight Blue #0A437A ΔE 0.049
- Onyx #343A40 ΔE 0.053
Use #28405F 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.