#276FAD
Closest named color: Mid Blue (#276AB3). oklch(52.8% 0.12 248.5), rgb(39, 111, 173).
Aa
White text reads best on this color (5.29:1).
About this color
#276FAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.120 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.019 away. White text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #276FAD |
| RGB | rgb(39, 111, 173) |
| HSL | hsl(208, 63%, 42%) |
| OKLCH | oklch(52.8% 0.12 248.5) |
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 #276FAD | 5.29:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #276FAD | 3.96:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #276FAD text on white | 5.29:1 | AA | Lc 76.0 | Fine for body text |
| #276FAD text on black | 3.96:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A6C4E3
oklch(80.9% 0.055 249.4)
-
Step 400
400
#75A5D5
oklch(70.6% 0.088 249.2)
-
Step 500
500
#4F8EC9
oklch(63% 0.111 248.5)
-
Step 600
600 (this color)
#276FAD
oklch(52.8% 0.12 248.5)
-
Step 700
700
#22649D
oklch(49.1% 0.112 248.6)
-
Step 800
800
#1F527F
oklch(42.7% 0.092 248.5)
-
Step 900
900
#1F4466
oklch(37.7% 0.072 248.5)
-
Step 950
950
#13283C
oklch(27% 0.046 248.8)
#276FAD 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) | #5272B0 | 0.042 |
| Deuteranopia (no green cones) | #3F66AC | 0.029 |
| Tritanopia (no blue cones) | #007E86 | 0.088 |
| Achromatopsia (no color) | #6B6B6B | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #276FAD
#276FAD
oklch(52.8% 0.12 248.5)
- #965C00
#965C00
oklch(52.8% 0.116 68)
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 #276FAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.023
- French Blue #436BAD ΔE 0.024
- Muted Blue #3B719F ΔE 0.028
- Nice Blue #107AB0 ΔE 0.031
- Ocean Blue #03719C ΔE 0.033
- Windows Blue #3778BF ΔE 0.039
- Dull Blue #49759C ΔE 0.046
Use #276FAD 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.