#156ECD
Closest named color: Mid Blue (#276AB3). oklch(54.3% 0.167 254.8), rgb(21, 110, 205).
Aa
White text reads best on this color (5.06:1).
About this color
#156ECD is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.167 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #156ECD |
| RGB | rgb(21, 110, 205) |
| HSL | hsl(211, 81%, 44%) |
| OKLCH | oklch(54.3% 0.167 254.8) |
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 #156ECD | 5.06:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #156ECD | 4.14:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #156ECD text on white | 5.06:1 | AA | Lc 74.4 | Content text, not long reading |
| #156ECD text on black | 4.14:1 | AA large text | Lc -27.3 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#A0C4F1
oklch(81% 0.075 254.2)
-
Step 400
400
#6BA3EA
oklch(70.6% 0.12 254.9)
-
Step 500
500
#418AE4
oklch(63.1% 0.154 255.2)
-
Step 600
600 (this color)
#156ECD
oklch(54.3% 0.167 254.8)
-
Step 700
700
#0B5FB5
oklch(49% 0.154 254.8)
-
Step 800
800
#0F4E93
oklch(42.7% 0.129 254.9)
-
Step 900
900
#164275
oklch(37.8% 0.099 254.5)
-
Step 950
950
#0E2745
oklch(27.1% 0.064 254.6)
#156ECD 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) | #3877D1 | 0.035 |
| Deuteranopia (no green cones) | #0067CB | 0.021 |
| Tritanopia (no blue cones) | #008593 | 0.125 |
| Achromatopsia (no color) | #6E6E6E | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #156ECD
#156ECD
oklch(54.3% 0.167 254.8)
- #966400
#966400
oklch(54.3% 0.115 74.8)
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 #156ECD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- Windows Blue #3778BF ΔE 0.044
- Royal Blue #4169E1 ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.051
- French Blue #436BAD ΔE 0.056
- Nice Blue #107AB0 ΔE 0.061
- Azul #1D5DEC ΔE 0.065
- Flat Blue #3C73A8 ΔE 0.066
Use #156ECD 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.