#2457A2
Closest named color: Dusk Blue (#26538D). oklch(46.4% 0.133 258.3), rgb(36, 87, 162).
Aa
White text reads best on this color (7.09:1).
About this color
#2457A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.133 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.034 away. White text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.96:1 |
| White text | 7.09:1 |
Values
| HEX | #2457A2 |
| RGB | rgb(36, 87, 162) |
| HSL | hsl(216, 64%, 39%) |
| OKLCH | oklch(46.4% 0.133 258.3) |
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 #2457A2 | 7.09:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #2457A2 | 2.96:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #2457A2 text on white | 7.09:1 | AAA | Lc 84.2 | Fine for body text |
| #2457A2 text on black | 2.96:1 | Fails | Lc -17.8 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A7C2EB
oklch(80.8% 0.065 258.6)
-
Step 400
400
#78A2E1
oklch(70.7% 0.104 258.3)
-
Step 500
500
#5589D8
oklch(63% 0.132 258.5)
-
Step 600
600
#3A72C5
oklch(55.6% 0.142 258.2)
-
Step 700
700 (this color)
#2457A2
oklch(46.4% 0.133 258.3)
-
Step 800
800
#254E8A
oklch(42.7% 0.11 258.1)
-
Step 900
900
#23416E
oklch(37.6% 0.085 258.3)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#2457A2 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) | #2F5EA5 | 0.023 |
| Deuteranopia (no green cones) | #1253A0 | 0.018 |
| Tritanopia (no blue cones) | #006974 | 0.104 |
| Achromatopsia (no color) | #585858 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2457A2
#2457A2
oklch(46.4% 0.133 258.3)
- #765100
#765100
oklch(46.3% 0.097 78.3)
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 #2457A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.046
- Cobalt #1E488F ΔE 0.051
- Dusky Blue #475F94 ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Peacock Blue #016795 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.057
Use #2457A2 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.