#245ACF
Closest named color: Warm Blue (#4B57DB). oklch(50.5% 0.19 262.8), rgb(36, 90, 207).
Aa
White text reads best on this color (6.10:1).
About this color
#245ACF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.190 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.43:1 |
| White text | 6.10:1 |
Values
| HEX | #245ACF |
| RGB | rgb(36, 90, 207) |
| HSL | hsl(221, 70%, 48%) |
| OKLCH | oklch(50.5% 0.19 262.8) |
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 #245ACF | 6.10:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #245ACF | 3.43:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #245ACF text on white | 6.10:1 | AA | Lc 79.8 | Fine for body text |
| #245ACF text on black | 3.43:1 | AA large text | Lc -22.0 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A1C1FD
oklch(80.9% 0.092 262.7)
-
Step 400
400
#6F9EFC
oklch(70.7% 0.147 263)
-
Step 500
500
#4982F9
oklch(63% 0.188 262.9)
-
Step 600
600
#2D68E8
oklch(55.6% 0.204 262.9)
-
Step 700
700 (this color)
#245ACF
oklch(50.5% 0.19 262.8)
-
Step 800
800
#1C47A3
oklch(42.7% 0.157 262.8)
-
Step 900
900
#1C3D82
oklch(37.8% 0.123 262.8)
-
Step 950
950
#11244C
oklch(27% 0.078 263.1)
#245ACF 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) | #006AD3 | 0.039 |
| Deuteranopia (no green cones) | #005ACD | 0.015 |
| Tritanopia (no blue cones) | #00778C | 0.145 |
| Achromatopsia (no color) | #626262 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #245ACF
#245ACF
oklch(50.5% 0.19 262.8)
- #815E00
#815E00
oklch(50.5% 0.104 83.2)
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 #245ACF, closest first.
No curated palette has a color within ΔE 0.04 of #245ACF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Azul #1D5DEC ΔE 0.045
- Royal Blue #4169E1 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.057
- Neon Blue #4361EE ΔE 0.060
- Mid Blue #276AB3 ΔE 0.064
- Cerulean Blue #056EEE ΔE 0.066
- Iris #6258C4 ΔE 0.072
Use #245ACF 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.