#115DBB
Closest named color: Mid Blue (#276AB3). oklch(49.1% 0.164 257.2), rgb(17, 93, 187).
Aa
White text reads best on this color (6.34:1).
About this color
#115DBB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.164 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.043 away. White text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.30:1 |
| White text | 6.34:1 |
Values
| HEX | #115DBB |
| RGB | rgb(17, 93, 187) |
| HSL | hsl(213, 83%, 40%) |
| OKLCH | oklch(49.1% 0.164 257.2) |
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 #115DBB | 6.34:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #115DBB | 3.30:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #115DBB text on white | 6.34:1 | AA | Lc 80.9 | Fine for body text |
| #115DBB text on black | 3.30:1 | AA large text | Lc -20.9 | 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 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
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A0C3F4
oklch(80.9% 0.079 256.8)
-
Step 400
400
#6CA2EF
oklch(70.7% 0.127 257.3)
-
Step 500
500
#4288E9
oklch(63% 0.162 257.2)
-
Step 600
600
#2070D8
oklch(55.7% 0.177 257.2)
-
Step 700
700 (this color)
#115DBB
oklch(49.1% 0.164 257.2)
-
Step 800
800
#124C97
oklch(42.6% 0.136 257.2)
-
Step 900
900
#174078
oklch(37.6% 0.106 257.3)
-
Step 950
950
#0F2646
oklch(26.9% 0.066 257.2)
#115DBB 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) | #2067BE | 0.030 |
| Deuteranopia (no green cones) | #0059B9 | 0.013 |
| Tritanopia (no blue cones) | #007483 | 0.124 |
| Achromatopsia (no color) | #5F5F5F | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #115DBB
#115DBB
oklch(49.1% 0.164 257.2)
- #815800
#815800
oklch(49.2% 0.103 77.4)
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 #115DBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.043
- French Blue #436BAD ΔE 0.064
- Blue Blue #2242C7 ΔE 0.066
- Denim Blue #3B5B92 ΔE 0.070
- Warm Blue #4B57DB ΔE 0.072
- Peacock Blue #016795 ΔE 0.072
- Dusk Blue #26538D ΔE 0.075
- Dusky Blue #475F94 ΔE 0.075
Use #115DBB 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.