#1B65CA
Closest named color: Mid Blue (#276AB3). oklch(52.2% 0.172 258), rgb(27, 101, 202).
Aa
White text reads best on this color (5.58:1).
About this color
#1B65CA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.172 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.041 away. White text reads best on it, at 5.58:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #1B65CA |
| RGB | rgb(27, 101, 202) |
| HSL | hsl(215, 76%, 45%) |
| OKLCH | oklch(52.2% 0.172 258) |
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 #1B65CA | 5.58:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #1B65CA | 3.76:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #1B65CA text on white | 5.58:1 | AA | Lc 77.3 | Fine for body text |
| #1B65CA text on black | 3.76:1 | AA large text | Lc -24.5 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#9FC3F7
oklch(81% 0.084 257.5)
-
Step 400
400
#6AA1F3
oklch(70.6% 0.134 258.2)
-
Step 500
500
#4087EE
oklch(63% 0.171 258)
-
Step 600
600
#1D6EDD
oklch(55.6% 0.186 258.1)
-
Step 700
700 (this color)
#1B65CA
oklch(52.2% 0.172 258)
-
Step 800
800
#114B9B
oklch(42.6% 0.143 258.2)
-
Step 900
900
#16407B
oklch(37.7% 0.111 257.8)
-
Step 950
950
#0E2648
oklch(27% 0.07 257.6)
#1B65CA 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) | #2470CE | 0.031 |
| Deuteranopia (no green cones) | #0061C8 | 0.016 |
| Tritanopia (no blue cones) | #007E8E | 0.131 |
| Achromatopsia (no color) | #686868 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B65CA
#1B65CA
oklch(52.2% 0.172 258)
- #8B6000
#8B6000
oklch(52.1% 0.109 78.2)
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 #1B65CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.041
- Royal Blue #4169E1 ΔE 0.049
- Azul #1D5DEC ΔE 0.057
- Warm Blue #4B57DB ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.058
- French Blue #436BAD ΔE 0.059
- Windows Blue #3778BF ΔE 0.063
- Neon Blue #4361EE ΔE 0.065
Use #1B65CA 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.