#275ABB
Closest named color: Mid Blue (#276AB3). oklch(49% 0.163 261.7), rgb(39, 90, 187).
Aa
White text reads best on this color (6.42:1).
About this color
#275ABB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.163 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.047 away. White text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.26:1 |
| White text | 6.42:1 |
Values
| HEX | #275ABB |
| RGB | rgb(39, 90, 187) |
| HSL | hsl(219, 65%, 44%) |
| OKLCH | oklch(49% 0.163 261.7) |
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 #275ABB | 6.42:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #275ABB | 3.26:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #275ABB text on white | 6.42:1 | AA | Lc 81.4 | Fine for body text |
| #275ABB text on black | 3.26:1 | AA large text | Lc -20.4 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A5C1F4
oklch(80.8% 0.079 262.3)
-
Step 400
400
#74A0EF
oklch(70.7% 0.126 261.5)
-
Step 500
500
#5086EA
oklch(63.2% 0.161 261.6)
-
Step 600
600
#346DD8
oklch(55.6% 0.175 261.5)
-
Step 700
700 (this color)
#275ABB
oklch(49% 0.163 261.7)
-
Step 800
800
#224A97
oklch(42.6% 0.134 261.8)
-
Step 900
900
#203F79
oklch(37.8% 0.106 261.6)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#275ABB 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) | #1866BE | 0.031 |
| Deuteranopia (no green cones) | #0058B9 | 0.020 |
| Tritanopia (no blue cones) | #007282 | 0.127 |
| Achromatopsia (no color) | #5F5F5F | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275ABB
#275ABB
oklch(49% 0.163 261.7)
- #7D5900
#7D5900
oklch(48.9% 0.101 81.2)
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 #275ABB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.047
- Blue Blue #2242C7 ΔE 0.061
- French Blue #436BAD ΔE 0.063
- Warm Blue #4B57DB ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.068
- Iris #6258C4 ΔE 0.072
- Dusky Blue #475F94 ΔE 0.073
- Dusk Blue #26538D ΔE 0.075
Use #275ABB 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.