#256AC5
Closest named color: Mid Blue (#276AB3). oklch(53.2% 0.158 257), rgb(37, 106, 197).
Aa
White text reads best on this color (5.32:1).
About this color
#256AC5 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.158 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.028 away. White text reads best on it, at 5.32:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #256AC5 |
| RGB | rgb(37, 106, 197) |
| HSL | hsl(214, 68%, 46%) |
| OKLCH | oklch(53.2% 0.158 257) |
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 #256AC5 | 5.32:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #256AC5 | 3.94:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #256AC5 text on white | 5.32:1 | AA | Lc 76.0 | Fine for body text |
| #256AC5 text on black | 3.94:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A4C3EF
oklch(81% 0.071 257.1)
-
Step 400
400
#72A2E7
oklch(70.6% 0.114 257.4)
-
Step 500
500
#4C8ADF
oklch(63.2% 0.144 256.8)
-
Step 600
600 (this color)
#256AC5
oklch(53.2% 0.158 257)
-
Step 700
700
#1F5FB2
oklch(49.2% 0.147 256.8)
-
Step 800
800
#1C4E90
oklch(42.8% 0.121 256.8)
-
Step 900
900
#1D4173
oklch(37.7% 0.095 257.2)
-
Step 950
950
#122743
oklch(27.1% 0.059 256.2)
#256AC5 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) | #3873C8 | 0.031 |
| Deuteranopia (no green cones) | #0C64C3 | 0.022 |
| Tritanopia (no blue cones) | #00808E | 0.120 |
| Achromatopsia (no color) | #6B6B6B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256AC5
#256AC5
oklch(53.2% 0.158 257)
- #906200
#906200
oklch(53.2% 0.111 76.7)
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 #256AC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.028
- French Blue #436BAD ΔE 0.044
- Windows Blue #3778BF ΔE 0.045
- Royal Blue #4169E1 ΔE 0.050
- Flat Blue #3C73A8 ΔE 0.059
- Nice Blue #107AB0 ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.063
- Warm Blue #4B57DB ΔE 0.066
Use #256AC5 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.