#276CB1
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.129 251.7), rgb(39, 108, 177).
Aa
White text reads best on this color (5.43:1).
About this color
#276CB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.129 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.007 away. White text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #276CB1 |
| RGB | rgb(39, 108, 177) |
| HSL | hsl(210, 64%, 42%) |
| OKLCH | oklch(52.3% 0.129 251.7) |
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 #276CB1 | 5.43:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #276CB1 | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #276CB1 text on white | 5.43:1 | AA | Lc 76.7 | Fine for body text |
| #276CB1 text on black | 3.86:1 | AA large text | Lc -25.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E8
oklch(80.9% 0.062 251.6)
-
Step 400
400
#72A5DD
oklch(70.8% 0.099 251.6)
-
Step 500
500
#4A8DD4
oklch(63.2% 0.127 251.7)
-
Step 600
600
#2A75C1
oklch(55.5% 0.139 252.1)
-
Step 700
700 (this color)
#276CB1
oklch(52.3% 0.129 251.7)
-
Step 800
800
#1A5187
oklch(42.8% 0.106 251.5)
-
Step 900
900
#1C436C
oklch(37.7% 0.083 251.9)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#276CB1 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) | #4B71B4 | 0.038 |
| Deuteranopia (no green cones) | #3664B0 | 0.023 |
| Tritanopia (no blue cones) | #007C86 | 0.095 |
| Achromatopsia (no color) | #6A6A6A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #276CB1
#276CB1
oklch(52.3% 0.129 251.7)
- #915D00
#915D00
oklch(52.3% 0.112 71.7)
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 #276CB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.007
- French Blue #436BAD ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.033
- Muted Blue #3B719F ΔE 0.038
- Nice Blue #107AB0 ΔE 0.040
- Windows Blue #3778BF ΔE 0.041
- Ocean Blue #03719C ΔE 0.042
- Peacock Blue #016795 ΔE 0.050
Use #276CB1 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.