#2D53B1
Closest named color: Blue Blue (#2242C7). oklch(47% 0.156 264.5), rgb(45, 83, 177).
Aa
White text reads best on this color (7.03:1).
About this color
#2D53B1 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.156 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.056 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #2D53B1 |
| RGB | rgb(45, 83, 177) |
| HSL | hsl(223, 59%, 44%) |
| OKLCH | oklch(47% 0.156 264.5) |
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 #2D53B1 | 7.03:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #2D53B1 | 2.98:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #2D53B1 text on white | 7.03:1 | AAA | Lc 84.0 | Fine for body text |
| #2D53B1 text on black | 2.98:1 | Fails | Lc -18.0 | 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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F2
oklch(80.9% 0.075 263.7)
-
Step 400
400
#7B9FEC
oklch(70.8% 0.12 264.4)
-
Step 500
500
#5A85E6
oklch(63.2% 0.154 264.4)
-
Step 600
600
#406CD4
oklch(55.6% 0.168 264.4)
-
Step 700
700 (this color)
#2D53B1
oklch(47% 0.156 264.5)
-
Step 800
800
#2A4A95
oklch(42.8% 0.129 264.3)
-
Step 900
900
#263E77
oklch(37.7% 0.102 264.8)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#2D53B1 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) | #0F5FB4 | 0.033 |
| Deuteranopia (no green cones) | #0053AF | 0.025 |
| Tritanopia (no blue cones) | #006A7A | 0.124 |
| Achromatopsia (no color) | #595959 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D53B1
#2D53B1
oklch(47% 0.156 264.5)
- #745500
#745500
oklch(47% 0.096 84)
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 #2D53B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.056
- Dusk Blue #26538D ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.060
- Mid Blue #276AB3 ΔE 0.062
- Blueberry #464196 ΔE 0.064
- Cobalt #1E488F ΔE 0.064
- Dusky Blue #475F94 ΔE 0.069
- Sapphire #2138AB ΔE 0.070
Use #2D53B1 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.