#126CA9
Closest named color: Mid Blue (#276AB3). oklch(51.4% 0.124 245.5), rgb(18, 108, 169).
Aa
White text reads best on this color (5.60:1).
About this color
#126CA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.124 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.021 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #126CA9 |
| RGB | rgb(18, 108, 169) |
| HSL | hsl(204, 81%, 37%) |
| OKLCH | oklch(51.4% 0.124 245.5) |
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 #126CA9 | 5.60:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #126CA9 | 3.74:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #126CA9 text on white | 5.60:1 | AA | Lc 77.5 | Fine for body text |
| #126CA9 text on black | 3.74:1 | AA large text | Lc -24.2 | 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
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A1C5E5
oklch(80.8% 0.06 245.5)
-
Step 400
400
#6CA7D9
oklch(70.8% 0.096 245.3)
-
Step 500
500
#4090CE
oklch(63.1% 0.122 245)
-
Step 600
600
#1779BB
oklch(55.7% 0.132 245.1)
-
Step 700
700 (this color)
#126CA9
oklch(51.4% 0.124 245.5)
-
Step 800
800
#0C5383
oklch(42.8% 0.102 245.3)
-
Step 900
900
#154569
oklch(37.7% 0.08 245.2)
-
Step 950
950
#0E293D
oklch(27.1% 0.05 243.6)
#126CA9 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) | #4F6FAC | 0.050 |
| Deuteranopia (no green cones) | #3962A8 | 0.034 |
| Tritanopia (no blue cones) | #007B82 | 0.087 |
| Achromatopsia (no color) | #686868 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #126CA9
#126CA9
oklch(51.4% 0.124 245.5)
- #935700
#935700
oklch(51.4% 0.115 65.4)
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 #126CA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.021
- Ocean Blue #03719C ΔE 0.028
- Peacock Blue #016795 ΔE 0.034
- French Blue #436BAD ΔE 0.035
- Muted Blue #3B719F ΔE 0.036
- Flat Blue #3C73A8 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.040
- Sea Blue #047495 ΔE 0.045
Use #126CA9 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.