#1D5EC7
Closest named color: Mid Blue (#276AB3). oklch(50.5% 0.176 260), rgb(29, 94, 199).
Aa
White text reads best on this color (6.03:1).
About this color
#1D5EC7 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.176 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.049 away. White text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.47:1 |
| White text | 6.03:1 |
Values
| HEX | #1D5EC7 |
| RGB | rgb(29, 94, 199) |
| HSL | hsl(217, 75%, 45%) |
| OKLCH | oklch(50.5% 0.176 260) |
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 #1D5EC7 | 6.03:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #1D5EC7 | 3.47:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #1D5EC7 text on white | 6.03:1 | AA | Lc 79.6 | Fine for body text |
| #1D5EC7 text on black | 3.47:1 | AA large text | Lc -22.3 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A1C2F8
oklch(80.9% 0.085 260.1)
-
Step 400
400
#6DA0F5
oklch(70.7% 0.137 260.2)
-
Step 500
500
#4586F1
oklch(63.2% 0.174 259.9)
-
Step 600
600
#256CE0
oklch(55.5% 0.191 260)
-
Step 700
700 (this color)
#1D5EC7
oklch(50.5% 0.176 260)
-
Step 800
800
#174A9D
oklch(42.7% 0.146 260)
-
Step 900
900
#193F7D
oklch(37.8% 0.114 259.8)
-
Step 950
950
#102549
oklch(26.9% 0.072 260.4)
#1D5EC7 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) | #096BCB | 0.033 |
| Deuteranopia (no green cones) | #005BC5 | 0.015 |
| Tritanopia (no blue cones) | #007889 | 0.135 |
| Achromatopsia (no color) | #636363 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5EC7
#1D5EC7
oklch(50.5% 0.176 260)
- #845D00
#845D00
oklch(50.6% 0.105 80.1)
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 #1D5EC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.054
- Azul #1D5DEC ΔE 0.057
- Royal Blue #4169E1 ΔE 0.060
- Blue Blue #2242C7 ΔE 0.066
- French Blue #436BAD ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.069
- Neon Blue #4361EE ΔE 0.070
Use #1D5EC7 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.