#375FBF
Closest named color: Mid Blue (#276AB3). oklch(51% 0.158 264.5), rgb(55, 95, 191).
Aa
White text reads best on this color (5.91:1).
About this color
#375FBF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.158 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.038 away. White text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #375FBF |
| RGB | rgb(55, 95, 191) |
| HSL | hsl(222, 55%, 48%) |
| OKLCH | oklch(51% 0.158 264.5) |
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 #375FBF | 5.91:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #375FBF | 3.55:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #375FBF text on white | 5.91:1 | AA | Lc 79.2 | Fine for body text |
| #375FBF text on black | 3.55:1 | AA large text | Lc -22.6 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500
#5984E7
oklch(63% 0.157 264.6)
-
Step 600
600
#406CD5
oklch(55.7% 0.169 264.5)
-
Step 700
700 (this color)
#375FBF
oklch(51% 0.158 264.5)
-
Step 800
800
#2A4995
oklch(42.6% 0.13 264.7)
-
Step 900
900
#263E77
oklch(37.7% 0.102 264.8)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#375FBF 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) | #266BC2 | 0.032 |
| Deuteranopia (no green cones) | #005EBD | 0.031 |
| Tritanopia (no blue cones) | #007686 | 0.127 |
| Achromatopsia (no color) | #646464 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375FBF
#375FBF
oklch(51% 0.158 264.5)
- #826000
#826000
oklch(51% 0.105 84.3)
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 #375FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.038
- French Blue #436BAD ΔE 0.049
- Warm Blue #4B57DB ΔE 0.053
- Iris #6258C4 ΔE 0.056
- Royal Blue #4169E1 ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.067
- Windows Blue #3778BF ΔE 0.068
- Dusky Blue #475F94 ΔE 0.070
Use #375FBF 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.