#156AB5
Closest named color: Mid Blue (#276AB3). oklch(51.7% 0.14 251), rgb(21, 106, 181).
Aa
White text reads best on this color (5.58:1).
About this color
#156AB5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.140 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.010 away. White text reads best on it, at 5.58:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #156AB5 |
| RGB | rgb(21, 106, 181) |
| HSL | hsl(208, 79%, 40%) |
| OKLCH | oklch(51.7% 0.14 251) |
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 #156AB5 | 5.58:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #156AB5 | 3.76:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #156AB5 text on white | 5.58:1 | AA | Lc 77.4 | Fine for body text |
| #156AB5 text on black | 3.76:1 | AA large text | Lc -24.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#A1C4EC
oklch(80.9% 0.068 252)
-
Step 400
400
#6BA5E2
oklch(70.7% 0.109 250.7)
-
Step 500
500
#408DDA
oklch(63.1% 0.139 251)
-
Step 600
600
#1875C7
oklch(55.5% 0.151 251)
-
Step 700
700 (this color)
#156AB5
oklch(51.7% 0.14 251)
-
Step 800
800
#0D508C
oklch(42.6% 0.117 251.4)
-
Step 900
900
#154370
oklch(37.7% 0.092 251.3)
-
Step 950
950
#0E2841
oklch(27.1% 0.057 249.9)
#156AB5 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) | #446FB8 | 0.039 |
| Deuteranopia (no green cones) | #2862B4 | 0.022 |
| Tritanopia (no blue cones) | #007C86 | 0.103 |
| Achromatopsia (no color) | #686868 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #156AB5
#156AB5
oklch(51.7% 0.14 251)
- #8F5B00
#8F5B00
oklch(51.6% 0.111 71.1)
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 #156AB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.010
- French Blue #436BAD ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.046
- Nice Blue #107AB0 ΔE 0.048
- Ocean Blue #03719C ΔE 0.049
- Windows Blue #3778BF ΔE 0.049
- Muted Blue #3B719F ΔE 0.051
- Peacock Blue #016795 ΔE 0.052
Use #156AB5 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.