#1B61DA
Closest named color: Azul (#1D5DEC). oklch(52.6% 0.198 260.8), rgb(27, 97, 218).
Aa
White text reads best on this color (5.57:1).
About this color
#1B61DA is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.198 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.029 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #1B61DA |
| RGB | rgb(27, 97, 218) |
| HSL | hsl(218, 78%, 48%) |
| OKLCH | oklch(52.6% 0.198 260.8) |
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 #1B61DA | 5.57:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #1B61DA | 3.76:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #1B61DA text on white | 5.57:1 | AA | Lc 77.1 | Fine for body text |
| #1B61DA text on black | 3.76:1 | AA large text | Lc -24.6 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300
#A0C2FB
oklch(81% 0.089 260.6)
-
Step 400
400
#6C9FF9
oklch(70.6% 0.143 261.1)
-
Step 500
500
#4484F6
oklch(63% 0.183 260.9)
-
Step 600
600 (this color)
#1B61DA
oklch(52.6% 0.198 260.8)
-
Step 700
700
#1858C7
oklch(49.1% 0.185 260.9)
-
Step 800
800
#1749A0
oklch(42.7% 0.151 260.8)
-
Step 900
900
#193E7F
oklch(37.7% 0.118 260.7)
-
Step 950
950
#10254B
oklch(27.1% 0.076 261.2)
#1B61DA 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) | #0071DE | 0.039 |
| Deuteranopia (no green cones) | #0060D8 | 0.010 |
| Tritanopia (no blue cones) | #007F94 | 0.150 |
| Achromatopsia (no color) | #686868 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B61DA
#1B61DA
oklch(52.6% 0.198 260.8)
- #8A6300
#8A6300
oklch(52.6% 0.109 81.5)
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 #1B61DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.029
- Royal Blue #4169E1 ΔE 0.040
- Cerulean Blue #056EEE ΔE 0.042
- Warm Blue #4B57DB ΔE 0.044
- Neon Blue #4361EE ΔE 0.045
- Bright Blue #0165FC ΔE 0.052
- Electric Blue #0652FF ΔE 0.065
- Mid Blue #276AB3 ΔE 0.068
Use #1B61DA 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.