#2B5BAF
Closest named color: Mid Blue (#276AB3). oklch(48.5% 0.144 260.7), rgb(43, 91, 175).
Aa
White text reads best on this color (6.52:1).
About this color
#2B5BAF is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.144 and its hue 261°. 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 6.52:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #2B5BAF |
| RGB | rgb(43, 91, 175) |
| HSL | hsl(218, 61%, 43%) |
| OKLCH | oklch(48.5% 0.144 260.7) |
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 #2B5BAF | 6.52:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #2B5BAF | 3.21:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #2B5BAF text on white | 6.52:1 | AA | Lc 81.9 | Fine for body text |
| #2B5BAF text on black | 3.21:1 | AA large text | Lc -19.9 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#78A1E6
oklch(70.7% 0.111 260.5)
-
Step 500
500
#5588DF
oklch(63.2% 0.143 260.4)
-
Step 600
600
#3A70CD
oklch(55.7% 0.155 260.5)
-
Step 700
700 (this color)
#2B5BAF
oklch(48.5% 0.144 260.7)
-
Step 800
800
#264C8F
oklch(42.6% 0.119 260.8)
-
Step 900
900
#234072
oklch(37.6% 0.093 260.6)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#2B5BAF 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) | #2D64B2 | 0.025 |
| Deuteranopia (no green cones) | #0458AD | 0.024 |
| Tritanopia (no blue cones) | #006F7C | 0.114 |
| Achromatopsia (no color) | #5E5E5E | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5BAF
#2B5BAF
oklch(48.5% 0.144 260.7)
- #7C5800
#7C5800
oklch(48.6% 0.1 81)
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 #2B5BAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.048
- French Blue #436BAD ΔE 0.054
- Dusky Blue #475F94 ΔE 0.055
- Dusk Blue #26538D ΔE 0.058
- Peacock Blue #016795 ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.063
- Denim #3B638C ΔE 0.067
Use #2B5BAF 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.