#126ED5
Closest named color: Royal Blue (#4169E1). oklch(54.8% 0.177 256), rgb(18, 110, 213).
Aa
White text reads best on this color (4.97:1).
About this color
#126ED5 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.177 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.037 away. White text reads best on it, at 4.97:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.21:1 |
| White text | 4.97:1 |
Values
| HEX | #126ED5 |
| RGB | rgb(18, 110, 213) |
| HSL | hsl(212, 84%, 45%) |
| OKLCH | oklch(54.8% 0.177 256) |
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 #126ED5 | 4.97:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #126ED5 | 4.21:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #126ED5 text on white | 4.97:1 | AA | Lc 73.8 | Content text, not long reading |
| #126ED5 text on black | 4.21:1 | AA large text | Lc -27.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9FC3F4
oklch(80.8% 0.08 256.2)
-
Step 400
400
#69A3EF
oklch(70.8% 0.128 255.7)
-
Step 500
500
#3E89E9
oklch(63% 0.163 256)
-
Step 600
600 (this color)
#126ED5
oklch(54.8% 0.177 256)
-
Step 700
700
#045EBB
oklch(49.2% 0.164 255.8)
-
Step 800
800
#0C4D97
oklch(42.7% 0.136 255.9)
-
Step 900
900
#144178
oklch(37.7% 0.106 255.7)
-
Step 950
950
#0D2647
oklch(26.9% 0.069 256.4)
#126ED5 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) | #2F78D9 | 0.033 |
| Deuteranopia (no green cones) | #0068D3 | 0.018 |
| Tritanopia (no blue cones) | #008797 | 0.133 |
| Achromatopsia (no color) | #707070 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #126ED5
#126ED5
oklch(54.8% 0.177 256)
- #976600
#976600
oklch(54.8% 0.115 75.9)
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 #126ED5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.037
- Cerulean Blue #056EEE ΔE 0.038
- Windows Blue #3778BF ΔE 0.052
- Mid Blue #276AB3 ΔE 0.053
- Azul #1D5DEC ΔE 0.055
- Neon Blue #4361EE ΔE 0.058
- Bright Blue #0165FC ΔE 0.064
- Warm Blue #4B57DB ΔE 0.065
Use #126ED5 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.