#2645A0
Closest named color: Cobalt (#1E488F). oklch(42.4% 0.152 265.8), rgb(38, 69, 160).
Aa
White text reads best on this color (8.60:1).
About this color
#2645A0 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.152 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #2645A0 |
| RGB | rgb(38, 69, 160) |
| HSL | hsl(225, 62%, 39%) |
| OKLCH | oklch(42.4% 0.152 265.8) |
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 #2645A0 | 8.60:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #2645A0 | 2.44:1 | Fails | Lc 14.9 | Not readable |
| #2645A0 text on white | 8.60:1 | AAA | Lc 89.1 | Fine for body text |
| #2645A0 text on black | 2.44:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A5C0FB
oklch(80.9% 0.089 265.4)
-
Step 400
400
#769DF9
oklch(70.7% 0.142 265.5)
-
Step 500
500
#5581F6
oklch(63.2% 0.181 265.9)
-
Step 600
600
#3B67E5
oklch(55.6% 0.198 265.7)
-
Step 700
700
#2E54C7
oklch(49% 0.184 265.8)
-
Step 800
800 (this color)
#2645A0
oklch(42.4% 0.152 265.8)
-
Step 900
900
#233C80
oklch(37.7% 0.119 265.7)
-
Step 950
950
#15244B
oklch(27.1% 0.075 265.8)
#2645A0 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) | #0052A3 | 0.036 |
| Deuteranopia (no green cones) | #00469E | 0.022 |
| Tritanopia (no blue cones) | #005B6B | 0.120 |
| Achromatopsia (no color) | #4C4C4C | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2645A0
#2645A0
oklch(42.4% 0.152 265.8)
- #634A00
#634A00
oklch(42.4% 0.087 86.3)
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 #2645A0, closest first.
No curated palette has a color within ΔE 0.04 of #2645A0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Sapphire #2138AB ΔE 0.037
- Blueberry #464196 ΔE 0.043
- Dusk Blue #26538D ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.056
- Light Navy #155084 ΔE 0.059
- Blue Blue #2242C7 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.068
Use #2645A0 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.