#126BBB
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.147 251.8), rgb(18, 107, 187).
Aa
White text reads best on this color (5.45:1).
About this color
#126BBB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.147 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.015 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #126BBB |
| RGB | rgb(18, 107, 187) |
| HSL | hsl(208, 82%, 40%) |
| OKLCH | oklch(52.3% 0.147 251.8) |
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 #126BBB | 5.45:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #126BBB | 3.84:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #126BBB text on white | 5.45:1 | AA | Lc 76.7 | Fine for body text |
| #126BBB text on black | 3.84:1 | AA large text | Lc -25.1 | 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DCF3
oklch(88.6% 0.039 250.7)
-
Step 300
300
#9FC4EE
oklch(80.8% 0.072 251.9)
-
Step 400
400
#69A5E6
oklch(70.8% 0.115 251.5)
-
Step 500
500
#3D8CDE
oklch(63% 0.146 252)
-
Step 600
600
#1175CC
oklch(55.7% 0.158 251.6)
-
Step 700
700 (this color)
#126BBB
oklch(52.3% 0.147 251.8)
-
Step 800
800
#08508F
oklch(42.8% 0.122 251.8)
-
Step 900
900
#134372
oklch(37.7% 0.095 251.6)
-
Step 950
950
#0D2743
oklch(26.9% 0.061 252.5)
#126BBB 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) | #4271BE | 0.039 |
| Deuteranopia (no green cones) | #2163B9 | 0.021 |
| Tritanopia (no blue cones) | #007E8A | 0.107 |
| Achromatopsia (no color) | #696969 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #126BBB
#126BBB
oklch(52.3% 0.147 251.8)
- #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 #126BBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.015
- French Blue #436BAD ΔE 0.039
- Windows Blue #3778BF ΔE 0.046
- Nice Blue #107AB0 ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.050
- Ocean Blue #03719C ΔE 0.056
- Muted Blue #3B719F ΔE 0.057
- Peacock Blue #016795 ΔE 0.061
Use #126BBB 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.