#156FAD
Closest named color: Mid Blue (#276AB3). oklch(52.4% 0.125 245.5), rgb(21, 111, 173).
Aa
White text reads best on this color (5.37:1).
About this color
#156FAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.125 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.020 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #156FAD |
| RGB | rgb(21, 111, 173) |
| HSL | hsl(204, 78%, 38%) |
| OKLCH | oklch(52.4% 0.125 245.5) |
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 #156FAD | 5.37:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #156FAD | 3.90:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #156FAD text on white | 5.37:1 | AA | Lc 76.3 | Fine for body text |
| #156FAD text on black | 3.90:1 | AA large text | Lc -25.5 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400
#70A6D6
oklch(70.6% 0.091 246.3)
-
Step 500
500
#4790CB
oklch(63.2% 0.115 245.5)
-
Step 600
600 (this color)
#156FAD
oklch(52.4% 0.125 245.5)
-
Step 700
700
#14659E
oklch(49.1% 0.117 245.8)
-
Step 800
800
#155380
oklch(42.8% 0.096 245.4)
-
Step 900
900
#1A4567
oklch(37.8% 0.075 245.6)
-
Step 950
950
#10283C
oklch(26.8% 0.048 246)
#156FAD 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) | #5172B0 | 0.050 |
| Deuteranopia (no green cones) | #3B65AC | 0.034 |
| Tritanopia (no blue cones) | #007E86 | 0.087 |
| Achromatopsia (no color) | #6A6A6A | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #156FAD
#156FAD
oklch(52.4% 0.125 245.5)
- #975A00
#975A00
oklch(52.5% 0.117 65.8)
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 #156FAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.020
- Ocean Blue #03719C ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.031
- Nice Blue #107AB0 ΔE 0.031
- French Blue #436BAD ΔE 0.033
- Muted Blue #3B719F ΔE 0.034
- Peacock Blue #016795 ΔE 0.043
- Windows Blue #3778BF ΔE 0.044
Use #156FAD 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.