#0453A5
Closest named color: Dusk Blue (#26538D). oklch(45% 0.149 255.6), rgb(4, 83, 165).
Aa
White text reads best on this color (7.53:1).
About this color
#0453A5 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.149 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.042 away. White text reads best on it, at 7.53:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #0453A5 |
| RGB | rgb(4, 83, 165) |
| HSL | hsl(211, 95%, 33%) |
| OKLCH | oklch(45% 0.149 255.6) |
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 #0453A5 | 7.53:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #0453A5 | 2.78:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #0453A5 text on white | 7.53:1 | AAA | Lc 85.5 | Fine for body text |
| #0453A5 text on black | 2.78:1 | Fails | Lc -16.5 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9BC3F8
oklch(80.8% 0.087 255.6)
-
Step 400
400
#63A2F5
oklch(70.6% 0.139 255.9)
-
Step 500
500
#3288F1
oklch(63% 0.177 255.7)
-
Step 600
600
#0070DD
oklch(55.6% 0.187 255.6)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800 (this color)
#0453A5
oklch(45% 0.149 255.6)
-
Step 900
900
#0B407D
oklch(37.6% 0.116 255.7)
-
Step 950
950
#0A2649
oklch(26.9% 0.073 255.8)
#0453A5 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) | #205BA8 | 0.028 |
| Deuteranopia (no green cones) | #004EA3 | 0.014 |
| Tritanopia (no blue cones) | #006774 | 0.111 |
| Achromatopsia (no color) | #545454 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0453A5
#0453A5
oklch(45% 0.149 255.6)
- #734D00
#734D00
oklch(45.1% 0.095 76.3)
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 #0453A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.042
- Cobalt #1E488F ΔE 0.044
- Light Navy #155084 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.060
- Sapphire #2138AB ΔE 0.066
- Peacock Blue #016795 ΔE 0.068
Use #0453A5 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.