#455EBB
Closest named color: Mid Blue (#276AB3). oklch(51.2% 0.149 269.3), rgb(69, 94, 187).
Aa
White text reads best on this color (5.87:1).
About this color
#455EBB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.149 and its hue 269°. 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 5.87:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #455EBB |
| RGB | rgb(69, 94, 187) |
| HSL | hsl(227, 46%, 50%) |
| OKLCH | oklch(51.2% 0.149 269.3) |
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 #455EBB | 5.87:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #455EBB | 3.57:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #455EBB text on white | 5.87:1 | AA | Lc 79.1 | Fine for body text |
| #455EBB text on black | 3.57:1 | AA large text | Lc -22.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#AEBFF0
oklch(80.9% 0.072 269.8)
-
Step 400
400
#849DE9
oklch(70.8% 0.115 269.4)
-
Step 500
500
#6682E2
oklch(63% 0.148 269.6)
-
Step 600
600
#4E6AD0
oklch(55.6% 0.16 269.1)
-
Step 700
700 (this color)
#455EBB
oklch(51.2% 0.149 269.3)
-
Step 800
800
#344892
oklch(42.7% 0.124 269.2)
-
Step 900
900
#2D3D74
oklch(37.6% 0.096 269.2)
-
Step 950
950
#1A2444
oklch(26.9% 0.061 268.9)
#455EBB 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) | #2C6ABE | 0.036 |
| Deuteranopia (no green cones) | #0F5FB9 | 0.041 |
| Tritanopia (no blue cones) | #007383 | 0.126 |
| Achromatopsia (no color) | #646464 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455EBB
#455EBB
oklch(51.2% 0.149 269.3)
- #7F6300
#7F6300
oklch(51.3% 0.105 89.2)
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 #455EBB, closest first.
No curated palette has a color within ΔE 0.04 of #455EBB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.043
- Iris #6258C4 ΔE 0.044
- French Blue #436BAD ΔE 0.045
- Warm Blue #4B57DB ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.059
- Royal Blue #4169E1 ΔE 0.062
- Dusky Blue #475F94 ΔE 0.063
Use #455EBB 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.